CN114458186A - Casing hanger longitudinal compensation annular pressure management nipple and use method thereof - Google Patents
Casing hanger longitudinal compensation annular pressure management nipple and use method thereof Download PDFInfo
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- CN114458186A CN114458186A CN202111301158.9A CN202111301158A CN114458186A CN 114458186 A CN114458186 A CN 114458186A CN 202111301158 A CN202111301158 A CN 202111301158A CN 114458186 A CN114458186 A CN 114458186A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
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Abstract
The invention provides a casing hanger longitudinal compensation annular pressure management nipple and a use method thereof, wherein the outer wall of the lower part of a casing hanger extension cylinder is in threaded connection with the inner wall of the upper part of a sliding sealing cylinder, a connecting sealing ring is arranged in the middle of the sliding sealing cylinder, the casing extension cylinder extends into the lower part of the sliding sealing cylinder, the lower part of the sliding sealing cylinder is sleeved on the outer side of the upper part of the casing extension cylinder, the outer wall of the head end of the casing extension cylinder forms a casing extension cylinder diameter expanding section, the lower part of the casing extension cylinder diameter expanding section forms a casing extension cylinder diameter reducing section, the casing extension cylinder diameter reducing section extends to the tail end of the casing extension cylinder, a shear pin connects the sliding sealing cylinder and the casing extension cylinder, and the casing extension cylinder diameter reducing section, the connecting sealing ring and the lower part of the inner wall of the sliding sealing cylinder form a buffer sealing area. The short section compensation range is large, the compensation distance is easy to realize serialization, and the compensation short section with the compensation range of 0.5 meter, 1.0 meter, 2.0 meter and 3.0 meter is customized according to the operation requirement.
Description
Technical Field
The invention relates to the field, in particular to a casing hanger longitudinal compensation annular pressure management nipple and a using method thereof.
Background
In the production process, the heat flow of stratum containing oil gas enters a shaft, so that the casing expands and extends under the condition of thermal stress, and for a ground wellhead, the wellhead device and the Christmas tree can integrally vertically shift and lift, and oil extraction equipment can be damaged and well control risks can be caused in serious cases; for underwater well heads, the casing string can be caused to jump up, and annular sealing failure can be caused in severe cases, so that well control risks are caused.
At present, the common method for reducing wellhead lifting (casing hanger lifting) is to increase the dosage of well cementation cement, reduce the length of a free section casing, control the yield, control the circulating temperature and reduce the thermal stress concentration; a common method for inhibiting wellhead lift (casing hanger lift) is to reinforce the locking mechanism of the wellhead and the christmas tree.
In addition, in the testing process and the production process of the deepwater oil-gas well, the temperature of formation fluid can be as high as hundreds of degrees centigrade or even higher, and the temperature near the seabed is only 2-4 ℃. During oil and gas testing and production, as the target fluid continuously flows, the temperature of the whole wellbore is inevitably increased remarkably, and the temperature of a wellhead can be increased by 60-70 ℃. The fluid is heated to expand to generate a large additional pressure load, and the casing is crushed or burst in serious conditions, so that serious potential safety hazard is brought to production. The oil and gas wells in land and shallow sea fields are above water wellheads and the elevated annular pressure can be easily released by opening the casing head flank valves. However, in the deep water oil and gas field development, due to the design limitation of an underwater drilling and production system, except that the annular pressure of an oil casing can be controlled, the pressure in the rest of the annular space cannot be released, and the annular pressure rise is an inevitable problem in the testing and production process of the deep water oil and gas well.
Currently, the common method of relieving the annular pressure rise is to use a compressible casing wrap, and a rupture disc to relieve the annular pressure.
Disclosure of Invention
The invention overcomes the defects in the prior art, the existing wellhead lifting method is complex, the yield needs to be controlled, the circulating temperature needs to be controlled, and the thermal stress concentration needs to be reduced.
The purpose of the invention is realized by the following technical scheme.
A casing hanger longitudinal compensation annular pressure management nipple comprises a casing hanger extension cylinder, a sliding sealing cylinder, a connecting sealing ring, a shearing pin and a casing extension cylinder,
the outer wall of the lower part of the sleeve hanging extension cylinder is in threaded connection with the inner wall of the upper part of the sliding seal cylinder, the middle part of the sliding seal cylinder is provided with the connecting seal ring, the sleeve extension cylinder extends into the lower part of the sliding seal cylinder, the lower part of the sliding seal cylinder is sleeved on the outer side of the upper part of the sleeve extension cylinder, the outer wall of the head end of the sleeve extension cylinder forms a diameter-expanding section of the sleeve extension cylinder, a diameter-reducing section of the sleeve extension cylinder is formed below the diameter-expanding section of the sleeve extension cylinder, the diameter-reducing section of the sleeve extension cylinder extends to the tail end of the sleeve extension cylinder, the diameter-reducing section of the sleeve extension cylinder and the outer wall of the lower part of the sliding seal cylinder are respectively provided with a shearing pin hole, a shearing pin penetrates through the shearing pin hole to connect the sliding seal cylinder and the sleeve extension cylinder, a compensating short section service tool is used in a matching manner, and the rotation of the compensating short section service tool is utilized to connect the threads between the sliding seal cylinder and the sleeve hanging extension cylinder in a loosening manner, And cut off the shear pin that connects a sliding seal section of thick bamboo and a sleeve pipe extension section of thick bamboo simultaneously, to reach and make the sleeve pipe hanger extend a section of thick bamboo, a sliding seal section of thick bamboo, connect the sealing ring three and can freely slide in vertical direction, and then play and block the sleeve pipe and shift up, solve the purpose that the sleeve pipe hanger can not install the not in-place problem under the complicated condition, the sleeve pipe extension section of thick bamboo reducing, connect the sealing ring with the inner wall lower part of a sliding seal section of thick bamboo forms a buffering sealed area, promptly after the unusual high pressure appears in the sleeve pipe inside, pressure can pass through the pressure transmission hole between a sliding seal section of thick bamboo and a sleeve pipe extension section of thick bamboo, cluster to the buffering sealed area that a sliding seal section of thick bamboo, a connecting sealing ring, a sleeve pipe extension section of thick bamboo reducing formed, play the effect of buffering pressure, protection pit shaft are complete.
The inner wall of the sliding sealing cylinder is provided with a pressure rupture disc, the pressure rupture disc is positioned below the diameter expansion section of the sleeve extension cylinder and above the connecting sealing ring, the inner wall of the sliding sealing cylinder is positioned, after abnormal high pressure occurs inside the sleeve, the pressure rupture disc is ruptured, pressure can be communicated with a buffer sealing area formed by the sliding sealing cylinder, the connecting sealing ring and the diameter reduction section of the sleeve extension cylinder through a pressure transmission hole between the sliding sealing cylinder and the sleeve extension cylinder, and the pressure rupture disc plays roles in buffering pressure and protecting the integrity of a shaft.
The inner wall of the sliding sealing cylinder is provided with a sliding sealing cylinder sealing groove, and a sliding sealing cylinder sealing ring is arranged in the sliding sealing cylinder sealing groove.
And a connecting sealing ring sealing groove is formed in the inner wall of the connecting sealing ring, and a connecting sealing ring is arranged in the connecting sealing ring sealing groove.
And a sleeve extension cylinder sealing groove is formed in the diameter expansion section of the sleeve extension cylinder, and a sleeve extension cylinder sealing ring is arranged in the sleeve extension cylinder sealing groove.
The extension cylinder of the casing hanger is connected to the tail end of the casing hanger through threads.
The casing string longitudinal compensation annular pressure management short section can be connected below casing strings of different manufacturers through threads, a compensation short section service tool enters a well along with a casing string feeding tool, after the casing string feeding tool is separated from the casing string, the compensation short section service tool is used for operating the casing string longitudinal compensation annular pressure management short section, and the change of the existing operation flow is small.
A use method of a casing hanger longitudinal compensation annular pressure management nipple is carried out according to the following steps:
under the normal operating mode:
step 1: drill floor connection running casing string and casing hanger
Connecting a running casing string and a casing hanger according to an operation instruction, and hanging the casing string on a rotary table by using slips;
step 2: drill floor connection running-in service tool string
Sequentially connecting a cement plug for well cementing, a length-matching short section, a compensation short section service tool and a casing hanging and feeding tool into the casing string;
and step 3: locking casing hanger feeding tool and casing hanger
Lowering the tool to enable the casing hanger feeding tool to enter the casing hanger, rotating the drill rod, and locking the casing hanger feeding tool and the casing hanger;
and 4, step 4: drill pipe casing pipe hanging in place
Connecting a tripping drill rod, and hanging a casing conveying pipe to a casing hanging position;
and 5: well cementation
Opening a pump and circulating, and performing well cementation operation according to a well cementation instruction;
step 6: the casing hanger running tool is unlocked from the casing hanger, and the mark point K1
Rotating the drill rod to unlock the casing hanger feeding tool and the casing hanger, and marking K1 on the drilling tool and the tidal range line;
and 7: spring key embedded in rotary key slot, mark point K2
Slowly lifting the drilling tool for about 1 meter, slowly rotating the drill rod until the torque is suddenly increased, embedding a spring key of the compensating short section service tool into a rotating key groove of the sliding sealing cylinder, and marking K2 on the drilling tool and the tidal range rope;
and 8: rotary separation casing hanging extension cylinder and sliding sealing cylinder
Slowly rotating the drill rod to enable the compensation short section service tool to drive the sliding sealing cylinder to rotate, and shearing off a shearing pin for connecting the sealing ring and the sleeve extension cylinder to enable the sleeve hanger extension cylinder, the sliding sealing cylinder and the connecting sealing ring to freely slide in the vertical direction;
and step 9: throwing metal ball to excite piston push rod, mark point K3
Slowly lifting the drilling tool for about 0.5 m, throwing a metal ball, pressing the drill rod to push out the piston push rod, and marking K3 on the drilling tool and the tidal range rope;
step 10: pressing down sliding sealing cylinder, mark point K4
Keeping the pressure not to be released, lowering the drill rod, pressing the sliding sealing cylinder downwards by using a piston push rod until the drill rod descends for about 1 m, releasing the pressure, and marking K4 on the drilling tool and the tidal range line;
step 11: recovery casing hanger feeding tool
Pulling out the drill, namely, conveying the casing hanger into a tool to be recovered to a drill floor, and detaching a throwing tool string;
the casing string meets the resistance, and the casing hanger is less than under the condition of 1 meter apart from the position of hanging sitting:
step 1: drill floor connection running casing string and casing hanger
Connecting a running casing string and a casing hanger according to an operation instruction, and hanging the casing string on a rotary table by using slips;
step 2: drill floor connection running-in service tool string
Sequentially connecting a cement plug for well cementing, a length-matching short section, a compensation short section service tool and a casing hanging and feeding tool into the casing string;
and step 3: locking casing hanger feeding tool and casing hanger
Lowering the tool to enable the casing hanger feeding tool to enter the casing hanger, rotating the drill rod, and locking the casing hanger feeding tool and the casing hanger;
and 4, step 4: drill pipe casing pipe hanging position
Connecting a running drill rod, hanging a casing to a hanging position, starting a pump to flush, lifting and placing the casing to the hanging position when the casing is blocked, wherein the distance between the casing and the hanging position is less than 1 m;
and 5: well cementation
Opening a pump and circulating, and performing well cementation operation according to a well cementation instruction;
and 6: the casing hanger running tool is unlocked from the casing hanger, marking point E1
Rotating the drill rod to unlock the casing hanger feeding tool and the casing hanger, and marking E1 on the drilling tool and the tidal range line;
and 7: throwing a metal ball to excite the piston push rod, mark point E2
Slowly lifting the drilling tool for about 1.5 meters, throwing a metal ball, pressing the drill rod to push out the piston push rod, and marking the drilling tool and the tidal range line with a mark E2;
and step 8: pressing down on the sliding sealing cartridge, point E3
The pressure is kept not to be released, the drill rod is lowered, the sliding sealing cylinder is pressed down by a piston push rod until the drill rod stops moving downwards, the pressure is relieved, and a mark E3 is marked on the drilling tool and the tidal range line;
and step 9: the casing hanger is lowered by the casing hanger tool, and the mark point E4
Lowering the drill pipe to enable the casing hanger tool to be in butt joint with the casing hanger again, judging the position of the casing hanger away from the setting hanger, and marking E4 on the drilling tool and the tidal range rope;
step 10: recovery casing hanger feeding tool
And (4) tripping the drill, hanging the casing into a tool, recovering the tool to the drill floor, and detaching the tool string.
The invention has the beneficial effects that: under the condition of basically not changing the conventional operation flow, a new scheme for controlling the wellhead lifting, namely the lifting of the casing hanger is provided;
the pup joint has a large compensation range, the compensation distance is easy to realize serialization, and the longitudinal compensation annular pressure management pup joints of the casing hanger with the compensation ranges of 0.5 meter, 1.0 meter, 2.0 meters and 3.0 meters can be customized according to the operation requirement;
the problem that the sleeve is not installed in place under complex conditions is solved;
this nipple joint is provided with the pressure rupture disc, and after unusual high pressure appeared in the sleeve pipe inside, the pressure rupture disc broke, played buffer pressure, protected the complete effect of pit shaft.
Drawings
FIG. 1 is a schematic cross-sectional structural view of the present invention;
in the figure: the casing hanger extension tool comprises a casing hanger extension cylinder 1, a sliding sealing cylinder 2, a connecting sealing ring 3, a shear pin 4, a casing extension cylinder 5, a casing hanger extension cylinder connecting thread 101, a sliding sealing cylinder connecting thread 201, a rotating key slot 202, a pressure rupture disc 301, a pressure transfer hole 502, a high-pressure wellhead E1, a casing hanger feeding tool E2, a casing hanger E3, a bearing ring E4, a well cementation cement plug E5, a compensation short section service tool T1, a spring key T101, a pressure transfer hole T102, a piston push rod T103, a centering ring T104 and a metal ball T105.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example one
A casing hanger longitudinal compensation annular pressure management nipple comprises a casing hanger extension cylinder 1, a sliding sealing cylinder 2, a connecting sealing ring 3, a shearing pin 4 and a casing extension cylinder 5,
the outer wall of the lower part of the casing hanging extension cylinder 1 is in threaded connection with the inner wall of the upper part of the sliding seal cylinder 2, the middle part of the sliding seal cylinder 2 is provided with a connecting seal ring 3, the casing extension cylinder 5 extends into the lower part of the sliding seal cylinder 2, the lower part of the sliding seal cylinder 2 is sleeved on the outer side of the upper part of the casing extension cylinder 5, the outer wall of the head end of the casing extension cylinder 5 forms a diameter-expanding section of the casing extension cylinder, a diameter-reducing section of the casing extension cylinder is formed below the diameter-expanding section of the casing extension cylinder, the diameter-reducing section of the casing extension cylinder extends to the tail end of the casing extension cylinder 5, the outer walls of the diameter-reducing section of the casing extension cylinder and the lower part of the sliding seal cylinder 2 are respectively provided with a shear pin hole, a shear pin 4 penetrates through the shear pin hole to connect the sliding seal cylinder 2 and the casing extension cylinder 5, a compensation short section service tool T1 is cooperatively used, and the threaded connection between the sliding seal cylinder 2 and the casing hanging extension cylinder 1 is loosened through the rotation of the compensation service tool T1, And the connecting sealing ring 2 is cut off, and the shearing pin 4 connecting the sliding sealing cylinder 2 and the sleeve extension cylinder 5 is cut off simultaneously, so that the sleeve hanger extension cylinder 1, the sliding sealing cylinder 2 and the connecting sealing ring 3 can freely slide in the vertical direction, and further the aim of blocking the sleeve from moving upwards and solving the problem that the sleeve hanger cannot be installed in place under complex conditions is achieved, a buffer sealing area is formed at the diameter reducing section of the sleeve extension cylinder, the connecting sealing ring 3 and the lower part of the inner wall of the sliding sealing cylinder 2, namely when abnormal high pressure occurs inside the sleeve (at this time, the pressure does not exceed the rupture pressure of a rupture disc), the pressure can pass through a pressure transfer hole 502 between the sliding sealing cylinder 2 and the sleeve extension cylinder 5 and be connected to the buffer sealing area formed by the sliding sealing cylinder 2, the connecting sealing ring 3 and the diameter reducing section of the sleeve extension cylinder, and the effects of buffering pressure and protecting the integrity of a shaft are achieved.
Example two
On the basis of the first embodiment, the pressure rupture disc 301 is arranged on the inner wall of the sliding seal cylinder 2, the pressure rupture disc 301 is positioned on the inner wall of the sliding seal cylinder 2 below the diameter expansion section of the casing extension cylinder and above the connecting seal ring 3, when abnormal high pressure occurs inside the casing (at this time, the pressure exceeds the rupture disc rupture pressure), the pressure rupture disc 301 ruptures, and the pressure can be connected to the buffer seal area formed by the sliding seal cylinder 2, the connecting seal ring 3 and the diameter reduction section of the casing extension cylinder through the pressure transmission hole 502 between the sliding seal cylinder 2 and the casing extension cylinder 5 to play the roles of buffering the pressure and protecting the integrity of a wellbore.
EXAMPLE III
On the basis of the second embodiment, a sliding seal cylinder sealing groove is formed in the inner wall of the sliding seal cylinder 2, and a sliding seal cylinder sealing ring is arranged in the sliding seal cylinder sealing groove.
And a connecting sealing ring sealing groove is formed in the inner wall of the connecting sealing ring 3, and a connecting sealing ring is arranged in the connecting sealing ring sealing groove.
And a sleeve extension cylinder sealing groove is formed in the diameter expansion section of the sleeve extension cylinder, and a sleeve extension cylinder sealing ring is arranged in the sleeve extension cylinder sealing groove.
The casing hanger extension barrel 1 is screwed on the tail end of the casing hanger E3.
The casing hanger longitudinal compensation annular pressure management nipple can be connected below casing hangers E3 of different manufacturers through threads, a compensation nipple service tool can enter a well together with a casing hanger feeding tool E2, after the casing hanger feeding tool E2 is separated from the casing hanger E3, the compensation nipple service tool T1 is used for operating the casing hanger longitudinal compensation annular pressure management nipple, and the change of the existing operation flow is small.
Example four
A use method of a casing hanger longitudinal compensation annular pressure management nipple is carried out according to the following steps:
under the normal operating mode:
step 1: drill floor connection running casing string and casing hanger E3
Connecting a running casing string and a casing hanger E3 according to an operation instruction, and hanging the casing string on a rotary table by using slips;
step 2: drill floor connection running-in service tool string
Sequentially connecting a well cementing cement plug E5, a length-matching short section, a compensation short section service tool T1 and a casing hanging and feeding tool E2 into the casing string;
and step 3: locking casing hanger running tool E2 and casing hanger E3
Lowering the tool to enable the casing hanger feeding tool E2 to enter the casing hanger E3, rotating the drill rod, and locking the casing hanger feeding tool E2 and the casing hanger E3;
and 4, step 4: drill pipe casing hanger E3 in place
Connecting a lower drill rod, and conveying a casing hanger E3 to a casing hanger setting position;
and 5: well cementation
Opening a pump and circulating, and performing well cementation operation according to a well cementation instruction;
step 6: the casing hanger running tool E2 is unlocked from the casing hanger E3, and the mark point K1
Rotating the drill rod to unlock a casing hanger feeding tool E2 and a casing hanger E3, and marking K1 on the drilling tool and the tidal range line;
and 7: spring key T101 is embedded in rotary key slot, mark point K2
Slowly lifting the drilling tool for about 1 meter, slowly rotating the drill rod until the torque is suddenly increased, embedding a spring key T101 of a compensating short section service tool T1 into a rotating key groove 202 of the sliding sealing cylinder 2, and marking K2 on the drilling tool and a tidal range rope;
and 8: rotary separation casing hangs an extension section of thick bamboo 1 and a sliding seal section of thick bamboo 2
Slowly rotating the drill rod to enable the compensating short section service tool T1 to drive the sliding sealing cylinder 2 to rotate, cutting off the shear pin 4 connecting the sealing ring 3 and the sleeve extension cylinder 5, and enabling the sleeve hanger extension cylinder 1, the sliding sealing cylinder 2 and the connecting sealing ring 3 to freely slide in the vertical direction;
and step 9: the metal ball T105 is thrown to excite the piston push rod T103 and mark point K3
Slowly lifting the drilling tool for about 0.5 m, throwing a metal ball T105, pressing the drill rod to push out a piston push rod T103, and marking K3 on the drilling tool and a tidal range line;
step 10: pressing down the sliding seal cartridge 2, mark K4
Keeping the pressure not to be released, lowering the drill rod, pressing down the sliding sealing cylinder 2 by using a piston push rod T103 until the drill rod descends for about 1 m, releasing the pressure, and marking K4 on the drilling tool and the tidal range rope;
step 11: recovery casing hanger feeding tool
Pulling out the drill, namely, conveying the casing hanger into a tool to be recovered to a drill floor, and detaching a throwing tool string;
the casing string meets the resistance, and the casing hanger is less than under the condition of 1 meter apart from the position of hanging sitting:
step 1: drill floor connection running casing string and casing hanger
Connecting a running casing string and a casing hanger E3 according to an operation instruction, and hanging the casing string on a rotary table by using slips;
step 2: drill floor connection running-in service tool string
Sequentially connecting a well cementation cement plug E5, a length matching short section, a compensation short section service tool T1 and a casing hanging and feeding tool E2 into a casing string;
and step 3: locking casing hanger running tool E2 and casing hanger E3
Lowering the tool to enable the casing hanger feeding tool E2 to enter the casing hanger E3, rotating the drill rod, and locking the casing hanger feeding tool E2 and the casing hanger E3;
and 4, step 4: drill pipe casing hanger E3 not in place
Connecting a running drill rod, conveying the casing hanger E3 to a setting and hanging position, starting a pump to flush, lifting and running the casing hanger E3 to the setting and hanging position when the casing hanger E3 is blocked, wherein the distance between the casing hanger E3 and the setting and hanging position is less than 1 m;
and 5: well cementation
Opening a pump and circulating, and performing well cementation operation according to a well cementation instruction;
step 6: the casing hanger running tool E2 is unlocked from the casing hanger E3, and the mark point E1
Rotating the drill rod to unlock a casing hanger feeding tool E2 and a casing hanger E3, and marking a drilling tool and a tidal range line with a mark E1;
and 7: the metal throwing ball T105 excites the piston push rod T103 and marks E2
Slowly lifting the drilling tool for about 1.5 meters, throwing a metal ball T105, pressing the drill rod to push out a piston push rod T103, and marking E2 on the drilling tool and the tidal range line;
and 8: pressing down the sliding seal cartridge 2, mark point E3
The pressure is kept not to be released, the drill rod is lowered, the sliding sealing barrel 2 is pressed down by a piston push rod T103 until the drill rod stops moving downwards, the pressure is relieved, and a mark E3 is marked on the drilling tool and the tidal range line;
and step 9: the casing hanger is sent into the tool E2 to probe the casing hanger, mark the point E4
Lowering the drill pipe, enabling the casing hanger feeding tool E2 to be in butt joint with the casing hanger E3 again, judging the distance between the casing hanger E3 and the setting position, and marking the drilling tool and the tidal range rope with a mark E4;
step 10: recovery casing hanger feeding tool
And (4) tripping the drill, hanging the casing into a tool, recovering the tool to the drill floor, and detaching the tool string.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The utility model provides a casing hangs vertical compensation annular pressure management nipple joint which characterized in that: comprises a casing hanger extension cylinder, a sliding sealing cylinder, a connecting sealing ring, a shearing pin and a casing extension cylinder,
the outer wall of the lower part of the sleeve hanging extension cylinder is in threaded connection with the inner wall of the upper part of the sliding seal cylinder, the middle part of the sliding seal cylinder is provided with the connecting seal ring, the sleeve extension cylinder extends into the lower part of the sliding seal cylinder, the lower part of the sliding seal cylinder is sleeved on the outer side of the upper part of the sleeve extension cylinder, the outer wall of the head end of the sleeve extension cylinder forms a diameter-expanding section of the sleeve extension cylinder, a diameter-reducing section of the sleeve extension cylinder is formed below the diameter-expanding section of the sleeve extension cylinder, the diameter-reducing section of the sleeve extension cylinder extends to the tail end of the sleeve extension cylinder, the diameter-reducing section of the sleeve extension cylinder and the outer wall of the lower part of the sliding seal cylinder are respectively provided with a shearing pin hole, a shearing pin penetrates through the shearing pin hole to connect the sliding seal cylinder and the sleeve extension cylinder, a compensating short section service tool is used in a matching manner, and the rotation of the compensating short section service tool is utilized to connect the threads between the sliding seal cylinder and the sleeve hanging extension cylinder in a loosening manner, And cut off the shear pin that connects a sliding seal section of thick bamboo and a sleeve pipe extension section of thick bamboo simultaneously, to reach and make the sleeve pipe hanger extend a section of thick bamboo, a sliding seal section of thick bamboo, connect the sealing ring three and can freely slide in vertical direction, and then play and block the sleeve pipe and shift up, solve the purpose that the sleeve pipe hanger can not install the not in-place problem under the complicated condition, the sleeve pipe extension section of thick bamboo reducing, connect the sealing ring with the inner wall lower part of a sliding seal section of thick bamboo forms a buffering sealed area, promptly after the unusual high pressure appears in the sleeve pipe inside, pressure can pass through the pressure transmission hole between a sliding seal section of thick bamboo and a sleeve pipe extension section of thick bamboo, cluster to the buffering sealed area that a sliding seal section of thick bamboo, a connecting sealing ring, a sleeve pipe extension section of thick bamboo reducing formed, play the effect of buffering pressure, protection pit shaft are complete.
2. The casing hanger longitudinal compensation annular pressure management nipple of claim 1, characterized in that: the inner wall of the sliding sealing cylinder is provided with a pressure rupture disc, the pressure rupture disc is positioned below the diameter expansion section of the sleeve extension cylinder and above the connecting sealing ring, the inner wall of the sliding sealing cylinder is positioned, after abnormal high pressure occurs inside the sleeve, the pressure rupture disc is ruptured, pressure can be communicated with a buffer sealing area formed by the sliding sealing cylinder, the connecting sealing ring and the diameter reduction section of the sleeve extension cylinder through a pressure transmission hole between the sliding sealing cylinder and the sleeve extension cylinder, and the pressure rupture disc plays roles in buffering pressure and protecting the integrity of a shaft.
3. The casing hanger longitudinal compensation annular pressure management nipple of claim 1, characterized in that: the inner wall of the sliding sealing cylinder is provided with a sliding sealing cylinder sealing groove, and a sliding sealing cylinder sealing ring is arranged in the sliding sealing cylinder sealing groove.
4. The casing hanger longitudinal compensation annular pressure management nipple of claim 1, characterized in that: and a connecting sealing ring sealing groove is formed in the inner wall of the connecting sealing ring, and a connecting sealing ring is arranged in the connecting sealing ring sealing groove.
5. The casing hanger longitudinal compensation annular pressure management nipple of claim 1, characterized in that: and a sleeve extension cylinder sealing groove is formed in the diameter expansion section of the sleeve extension cylinder, and a sleeve extension cylinder sealing ring is arranged in the sleeve extension cylinder sealing groove.
6. The casing hanger longitudinal compensation annular pressure management nipple of claim 1, characterized in that: the extension cylinder of the casing hanger is connected to the tail end of the casing hanger through threads.
7. The use method of the casing hanger longitudinal compensation annular pressure management nipple of any one of claims 1-6, characterized by: the method comprises the following steps:
under the normal operating mode:
step 1: drill floor connection running casing string and casing hanger
Connecting a running casing string and a casing hanger according to an operation instruction, and hanging the casing string on a rotary table by using slips;
step 2: drill floor connection running-in service tool string
Sequentially connecting a cement plug for well cementing, a length-matching short section, a compensation short section service tool and a casing hanging and feeding tool into the casing string;
and step 3: locking casing hanger feeding tool and casing hanger
Lowering the tool to enable the casing hanger feeding tool to enter the casing hanger, rotating the drill rod, and locking the casing hanger feeding tool and the casing hanger;
and 4, step 4: drill pipe casing pipe hanging in place
Connecting a tripping drill rod, and hanging a casing conveying pipe to a casing hanging position;
and 5: well cementation
Opening a pump and circulating, and performing well cementation operation according to a well cementation instruction;
step 6: the casing hanger running tool is unlocked from the casing hanger, and the mark point K1
Rotating the drill rod to unlock the casing hanger feeding tool and the casing hanger, and marking K1 on the drilling tool and the tidal range line;
and 7: spring key embedded in rotary key slot, mark point K2
Slowly lifting the drilling tool for about 1 meter, slowly rotating the drill rod until the torque is suddenly increased, embedding a spring key of the compensating short section service tool into a rotating key groove of the sliding sealing cylinder, and marking K2 on the drilling tool and the tidal range rope;
and 8: rotary separation casing hanging extension cylinder and sliding sealing cylinder
Slowly rotating the drill rod to enable the compensation short section service tool to drive the sliding sealing cylinder to rotate, and shearing off a shearing pin for connecting the sealing ring and the sleeve extension cylinder to enable the sleeve hanger extension cylinder, the sliding sealing cylinder and the connecting sealing ring to freely slide in the vertical direction;
and step 9: throwing a metal ball to excite the piston push rod, marking point K3
Slowly lifting the drilling tool for about 0.5 m, throwing a metal ball, pressing the drill rod to push out the piston push rod, and marking K3 on the drilling tool and the tidal range rope;
step 10: pressing down sliding sealing cylinder, mark point K4
Keeping the pressure not to be released, lowering the drill rod, pressing the sliding sealing cylinder downwards by using a piston push rod until the drill rod descends for about 1 m, releasing the pressure, and marking K4 on the drilling tool and the tidal range line;
step 11: recovery casing hangs and sends into instrument
Pulling out the drill, namely, conveying the casing hanger into a tool to be recovered to a drill floor, and detaching a throwing tool string;
the casing string meets the resistance, and the casing hanger is less than 1 meter away from the position of the sitting hanger:
step 1: drill floor connection running casing string and casing hanger
Connecting a running casing string and a casing hanger according to an operation instruction, and hanging the casing string on a rotary table by using slips;
step 2: drill floor connection running service tool string
Sequentially connecting a cement plug for well cementing, a length-matching short section, a compensation short section service tool and a casing hanging and feeding tool into the casing string;
and step 3: locking casing hanger feeding tool and casing hanger
Lowering the tool to enable the casing hanger feeding tool to enter the casing hanger, rotating the drill rod, and locking the casing hanger feeding tool and the casing hanger;
and 4, step 4: drill pipe casing pipe hanging position
Connecting a running drill rod, hanging a casing to a hanging position, starting a pump to flush, lifting and placing the casing to the hanging position when the casing is blocked, wherein the distance between the casing and the hanging position is less than 1 m;
and 5: well cementation
Opening a pump, circulating, and performing well cementation operation according to a well cementation instruction;
step 6: the casing hanger running tool is unlocked from the casing hanger, marking point E1
Rotating the drill rod to unlock the casing hanger feeding tool and the casing hanger, and marking E1 on the drilling tool and the tidal range line;
and 7: throwing a metal ball to excite the piston push rod, mark point E2
Slowly lifting the drilling tool for about 1.5 meters, throwing a metal ball, pressing the drill rod to push out the piston push rod, and marking the drilling tool and the tidal range line with a mark E2;
and 8: pressing down on the sliding sealing cartridge, point E3
The pressure is kept not to be released, the drill rod is lowered, the sliding sealing cylinder is pressed down by a piston push rod until the drill rod stops moving downwards, the pressure is relieved, and a mark E3 is marked on the drilling tool and the tidal range line;
and step 9: the casing hanger is lowered by the casing hanger tool, and the mark point E4
Lowering the drill pipe to enable the casing hanger tool to be in butt joint with the casing hanger again, judging the position of the casing hanger away from the setting hanger, and marking E4 on the drilling tool and the tidal range rope;
step 10: recovery casing hanger feeding tool
And (4) tripping the drill, hanging the casing into a tool, recovering the tool to the drill floor, and detaching the tool string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301158.9A CN114458186A (en) | 2021-11-04 | 2021-11-04 | Casing hanger longitudinal compensation annular pressure management nipple and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301158.9A CN114458186A (en) | 2021-11-04 | 2021-11-04 | Casing hanger longitudinal compensation annular pressure management nipple and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114458186A true CN114458186A (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111301158.9A Pending CN114458186A (en) | 2021-11-04 | 2021-11-04 | Casing hanger longitudinal compensation annular pressure management nipple and use method thereof |
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| CN (1) | CN114458186A (en) |
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|---|---|---|---|---|
| US4712621A (en) * | 1986-12-17 | 1987-12-15 | Hughes Tool Company | Casing hanger running tool |
| RU2231608C1 (en) * | 2002-12-15 | 2004-06-27 | Общество с ограниченной ответственностью "Биттехника" | Device for mounting of deflector wedge in well shaft |
| US20090090508A1 (en) * | 2007-10-03 | 2009-04-09 | Tesco Corporation (Us) | Liner Drilling Method and Liner Hanger |
| US20090314496A1 (en) * | 2008-03-28 | 2009-12-24 | Frank's Casing Crew And Rental Tools, Inc. | Multipurpose Tubular Running Tool |
| CN108386146A (en) * | 2018-04-27 | 2018-08-10 | 中国石油大学(北京) | Deepwater drilling casing head and annular space sealing device tripping in tool and its application method |
| US20200024916A1 (en) * | 2018-07-23 | 2020-01-23 | Kobold Corporation | Sleeve valves, shifting tools and methods for wellbore completion operations therewith |
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2021
- 2021-11-04 CN CN202111301158.9A patent/CN114458186A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712621A (en) * | 1986-12-17 | 1987-12-15 | Hughes Tool Company | Casing hanger running tool |
| RU2231608C1 (en) * | 2002-12-15 | 2004-06-27 | Общество с ограниченной ответственностью "Биттехника" | Device for mounting of deflector wedge in well shaft |
| US20090090508A1 (en) * | 2007-10-03 | 2009-04-09 | Tesco Corporation (Us) | Liner Drilling Method and Liner Hanger |
| US20090314496A1 (en) * | 2008-03-28 | 2009-12-24 | Frank's Casing Crew And Rental Tools, Inc. | Multipurpose Tubular Running Tool |
| CN108386146A (en) * | 2018-04-27 | 2018-08-10 | 中国石油大学(北京) | Deepwater drilling casing head and annular space sealing device tripping in tool and its application method |
| WO2019205479A1 (en) * | 2018-04-27 | 2019-10-31 | 中国石油大学(北京) | Casing head and annulus sealing device running tool for deepwater drilling, and method for using same |
| US20200024916A1 (en) * | 2018-07-23 | 2020-01-23 | Kobold Corporation | Sleeve valves, shifting tools and methods for wellbore completion operations therewith |
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