CN111577138B - Lower casing grouting device - Google Patents
Lower casing grouting device Download PDFInfo
- Publication number
- CN111577138B CN111577138B CN202010462174.5A CN202010462174A CN111577138B CN 111577138 B CN111577138 B CN 111577138B CN 202010462174 A CN202010462174 A CN 202010462174A CN 111577138 B CN111577138 B CN 111577138B
- Authority
- CN
- China
- Prior art keywords
- insertion head
- casing
- pipe body
- hollow pipe
- grouting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003780 insertion Methods 0.000 claims abstract description 59
- 230000037431 insertion Effects 0.000 claims abstract description 59
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 239000011440 grout Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a casing running grouting device which comprises an insertion head extending into a casing and a hollow pipe body arranged on the side surface of the insertion head, wherein a stop block in the same length direction as the insertion head is arranged on the periphery of the hollow pipe body, a quick connector is arranged at one end of the hollow pipe body, which is far away from the insertion head, and the insertion head is communicated with the inner cavity of the hollow pipe body. The casing running grouting device can directly perform grouting in the casing running operation gap in the casing running process, improves the traditional casing running grouting process, reduces the operation procedures, obviously reduces the working strength of operators, reduces the operation risk and improves the casing running operation efficiency. In addition, the invention has the advantages of simple structure, convenient processing, low cost, light weight, quick and convenient field operation, repeated use and good application prospect, and can be widely applied to casing running operation in a drilling field.
Description
Technical Field
The invention relates to the field of petroleum, natural gas and geological drilling engineering, in particular to a casing running grouting device.
Background
In the oil drilling process, the casing running operation is indispensable. Need be in milk to the casing string among the casing running process to the weight of increase casing string ensures that the sleeve pipe can normally be transferred, has also avoided simultaneously causing the too big damage casing pipe float shoe and float collar of the inside and outside differential pressure of casing string because of not having grouted. In order to ensure the safety of casing running operation, in the casing running operation process, grouting needs to be performed quickly, the standing time of a casing string in an open hole section is reduced, differential pressure drill sticking of the casing string is avoided, and the casing string is ensured to be lowered to a preset depth. At present, the inner casing running operation in the industry has two grouting modes:
one way is that: the automatic grouting device of the sleeve matched with the inner diameter size of the sleeve is used, the automatic grouting device of the sleeve is connected with the top drive protection joint, the operation is carried out on a derrick sleeve centering table through an operator in the sleeve setting process, a single sleeve pipe elevator connected with the sleeve is opened to center the automatic grouting device, the top drive traveling block is lowered to enable the automatic grouting device to be inserted into the sleeve, the sleeve pipe elevator is buckled, and the function of grouting in the buckling and lowering processes of each sleeve is achieved. However, this grouting method has two disadvantages:
(1) the operation of operators on the derrick casing centralizing platform is required, each casing needs to be repeatedly opened and closed, and the operation is complex and easy to cause personnel injury accidents.
(2) The lower part of the automatic grouting device is provided with a rubber hose, the automatic grouting device is sealed through a sealing ring in the pumping grouting process, the automatic grouting device is frequently inserted and pulled out in the casing running process, and the lower part of the automatic grouting device frequently rubs with the inner wall of a casing, so that the sealing ring or the rubber hose is easily peeled, the rubber falls into a casing string in a well, and a casing circulation channel is blocked.
The other mode is as follows: and (3) setting the casing column on the wellhead turntable every next casing or several casings, and starting the pump to grout the casing string through the top drive opening. However, this method needs to keep the casing string still, which not only affects the efficiency of casing running, but also is prone to casing pressure differential sticking caused by the casing string being still, resulting in the casing not running to the predetermined depth.
Disclosure of Invention
The invention aims to solve the technical problem of providing a casing running grouting device.
The technical scheme adopted by the invention for solving the technical problems is as follows: the lower casing grouting device comprises an insertion head extending into a casing and a hollow pipe body arranged on the side face of the insertion head, wherein a stop block which is the same as the length direction of the insertion head is arranged on the periphery of the hollow pipe body, a quick connector is arranged at one end, far away from the insertion head, of the hollow pipe body, and the insertion head is communicated with the inner cavity of the hollow pipe body.
Preferably, the insertion head outer diameter is smaller than the casing inner diameter;
the distance between the periphery of the insertion head and the stop block is larger than the wall thickness of the casing collar.
Preferably, the distance between the insertion head and the stop block is 1.5-3 times of the wall thickness of the casing coupling.
Preferably, the inner diameter of the insertion head and the inner diameter of the hollow pipe body are both 35-60 mm; the outer diameter of the insertion head and the outer diameter of the hollow pipe body are both 45-70 mm.
Preferably, the length of the insertion head is 200-300 mm, and the length of the hollow pipe body is 250-300 mm.
Preferably, the device also comprises a vertical connecting piece;
the insertion head and the hollow pipe body are respectively arranged at two ends of the vertical connecting piece.
Preferably, the insertion head and the hollow tube body form an included angle of 90 degrees, the stopper and the hollow tube body form an included angle of 90 degrees, and the stopper installation direction is parallel to the insertion head.
Preferably, the insertion head, the hollow tube body and the stopper are metal pieces.
Preferably, the stopper comprises a sleeve which is sleeved on the periphery of the hollow pipe body and can reciprocate along the axial direction of the hollow pipe body;
and locate the locating part of sleeve periphery.
Preferably, the quick connector further comprises a connecting pipe connected with the quick connector; and the control valve is arranged on the connecting pipe and used for adjusting the grouting flow.
The implementation of the invention has the following beneficial effects: the casing running grouting device can directly perform grouting in the casing running operation gap in the casing running process, improves the traditional casing running grouting process, reduces the operation procedures, obviously reduces the working strength of operators, reduces the operation risk and improves the casing running operation efficiency. In addition, the invention has the advantages of simple structure, convenient processing, low cost, light weight, quick and convenient field operation, repeated use and good application prospect, and can be widely applied to casing running operation in a drilling field.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of a lower casing grouting apparatus according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the casing running grouting apparatus of FIG. 1;
FIG. 3 is a schematic view of a lower casing grouting apparatus according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a casing grouting device according to another embodiment of the present invention
Fig. 5 is an operational view of the casing running grouting apparatus of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 1-2, the grouting device for casing running of the present invention comprises an insertion head 1 extending into a casing 11, a hollow pipe body 2 disposed on a side surface of the insertion head 1, a stopper 3 disposed on an outer periphery of the hollow pipe body 2 and having a length direction the same as that of the insertion head 1, a quick coupling 4 disposed on an end of the hollow pipe body 2 away from the insertion head 1, and an inner cavity of the insertion head 1 communicating with an inner cavity of the hollow pipe body 2.
The insertion head 1 has an outer diameter smaller than the inner diameter of the sleeve 11 so as to project into the tube from the side of the sleeve 11 which is exposed to the carousel surface 12.
Furthermore, the inner diameter of the insertion head 1 is the same as the inner diameter of the hollow pipe body 2, so that the flow and the flow speed of fluid passing through the insertion head 1 and the hollow pipe body 2 are stable when pump grouting is started, the grouting device is prevented from shaking, the inner diameters of the insertion head 1 and the hollow pipe body 2 are 35-60 mm, and the outer diameter of the insertion head 1 and the outer diameter of the hollow pipe body 2 are 45-70 mm. The wall thickness is small, the weight of the grouting device can be obviously reduced, the labor intensity of operators is reduced, and the operation is convenient.
The length of the insertion head 1 is 200-300 mm, and the length of the hollow tube 2 is 250-300 mm. The length of the insertion head 1 and the hollow pipe body 2 is short, the weight is light, and the operation is convenient.
In this embodiment, the insertion head 1, the hollow tube 2 and the stopper 3 are made of metal, such as stainless steel, copper, or red copper, so as to increase the overall strength of the device. Of course, a high-molecular high-density corrosion-resistant material may also be adopted, and the material may be selected according to the requirement, which is not specifically limited herein.
Furthermore, the insertion head 1, the hollow tube 2 and the stopper 3 can be directly welded and fixed, and do not need to be assembled again when in use. The hollow tube 2 may also be screwed together by a screw thread, such as a screw thread provided on the side of the insertion head 1 and a screw thread (e.g., an external thread surface) provided on the end of the hollow tube. Of course, the preset position of the circumferential side surface of the hollow tube 2 is provided with a convex screw interface, and the end of the stop block 3 is provided with an external thread surface, and the two are in threaded connection. And related parts are convenient to replace.
In some embodiments, as shown in fig. 3, the apparatus further includes a vertical connecting member 5, the insertion head 1 and the hollow tube 2 are respectively installed at two ends of the vertical connecting member 5, the material of the vertical connecting member 5 may be the same as that of the insertion head 1 and the hollow tube 2, and the three may be welded together, or the ports of the vertical connecting member 5 are screw interfaces, and the ends of the insertion head 1 and the hollow tube 2 are also provided with screw surfaces to be screwed with each other, so as to facilitate replacement and maintenance of the related components.
Furthermore, the included angle between the insertion head 1 and the hollow pipe body 2 is 90 degrees, the included angle between the stop block 3 and the hollow pipe body 2 is 90 degrees, and the installation direction of the stop block 3 is parallel to the insertion head 1. After the insertion head 1 is inserted into the casing 11, the stop block 3 can be clamped on the outer wall of the coupling of the casing 11 to fix the grouting device. Of course, a certain inclination angle may be set, and is not limited herein.
The distance between this insert 1 periphery and the dog 3 is greater than 11 coupling wall thicknesses of sleeve pipe, and this insert 1 cooperatees with this dog 3 and then the block is on this sleeve pipe 11 to carry on spacingly to this lower casing grouting device, grouting device shake or swing when preventing to open the pump grout, cause the accident.
Further, the distance between the insertion head 1 and the stop block 3 is 1.5-3 times of the wall thickness of the casing coupling, and the stop block 3 can be directly welded to the periphery of the hollow pipe body 2.
In some embodiments, as shown in fig. 4, the stopper 3 includes a sleeve 31 disposed on the outer circumference of the hollow tube 2 and capable of reciprocating along the axial direction of the hollow tube 2, and a limiting member 32 disposed on the outer circumference of the sleeve 31, wherein the limiting member 32 may be a rod structure, further, the sleeve 31 may be an openable structure to move around the outer circumference of the hollow tube 2 properly, and the limiting member may be a cylinder or a cube structure.
Further, the sleeve 31 may be a nut, and one or more sections of the outer circumference of the hollow tube 2 are provided with a threaded surface, and the nut can move on the threaded surface and is limited at a predetermined position, so that the relative position of the stop 3 and the insertion head 1 can be adjusted to adapt to different specifications of the casing 11. Of course, the stop 3 may have other structures, and is not limited herein.
Further, the device also comprises a connecting pipe 7 connected with the quick connector 4, and a control valve 8 arranged on the connecting pipe 7 and used for adjusting the grouting flow. The connection pipe 7 may be a connection hose and the control valve 8 may be a ball valve. The quick coupling 4 may be a commercially available connector, which allows quick connection and disconnection with the connection pipe 7. The inside and outside diameter of connecting pipe 7 is close with inside and outside diameter of cavity body 2 to alleviate connecting pipe 7 weight, increase the simple operation nature, when opening the pump grout, through the aperture of control valve 8, adjust the grout flow, select suitable flow, both can grout fast, can not make cementer again because of the too big shake or the swing that leads to of flow.
As shown in fig. 5, after connecting a casing 11, lowering the casing 11 to a proper height, setting a casing slip, removing the elevator of the casing 11, when the driller lifts the traveling block, the operator inserts the insertion head 1 of the casing-lowering grouting device into the casing 11, starting the pump for grouting, the driller normally operates the traveling block to lift the next casing 11 from the ramp port to the wellhead rotary table surface 12, stopping the pump for grouting, the operator pulls out the casing 11 from the insertion head 1, buckles the casing 11 and then screws the casing 11, and then lowers the casing 11 to a proper height, so as to reciprocate, and grouting is performed by using the casing-lowering grouting device without stopping the casing-lowering 11.
The application provides a pair of casing running cementer compares with prior art, at the casing running in-process, can directly be in the casing running clearance and grout, does not need personnel to right the platform at the sleeve pipe and operates, has improved traditional casing running grout technology, has reduced the operation process, obviously reduces operation personnel working strength, reduces the operation risk, has improved casing running operating efficiency. In addition, the casing running grouting device has the advantages of simple structure, convenience in processing, low cost, light weight, rapidness and convenience in field operation, reusability and good application prospect, and can be widely applied to casing running operation in a drilling field.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (6)
1. The casing running grouting device is characterized by comprising an insertion head extending into a casing and a hollow pipe body arranged on the side surface of the insertion head, wherein a stop block which is the same as the insertion head in the length direction is arranged on the periphery of the hollow pipe body, the distance between the periphery of the insertion head and the stop block is larger than the wall thickness of a casing coupling, the distance between the insertion head and the stop block is 1.5-3 times of the wall thickness of the casing coupling, a quick connector is arranged at one end, far away from the insertion head, of the hollow pipe body, and the insertion head is communicated with the inner cavity of the hollow pipe body;
the inner diameter of the insertion head and the inner diameter of the hollow pipe body are both 35-60 mm; the outer diameter of the insertion head and the outer diameter of the hollow pipe body are both 45-70 mm;
the length of the insertion head is 200-300 mm, and the length of the hollow pipe body is 250-300 mm;
the stop block comprises a sleeve which is sleeved on the periphery of the hollow pipe body and can axially reciprocate along the hollow pipe body; and locate the locating part of sleeve periphery.
2. A casing running grouting device according to claim 1, characterised in that the insert head outer diameter is smaller than the casing inner diameter.
3. The casing running grouting apparatus of claim 1, further comprising a vertical connector;
the insertion head and the hollow pipe body are respectively arranged at two ends of the vertical connecting piece.
4. The casing running grouting device according to claim 1, wherein the angle between the insertion head and the hollow pipe body is 90 degrees, the angle between the stopper and the hollow pipe body is 90 degrees, and the installation direction of the stopper is parallel to the insertion head.
5. The casing running grouting device of claim 1, wherein the insertion head, the hollow pipe body and the stopper are metal pieces.
6. The casing running grouting apparatus according to claim 1, further comprising a connection pipe connected to the quick coupling; and the control valve is arranged on the connecting pipe and used for adjusting the grouting flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010462174.5A CN111577138B (en) | 2020-05-27 | 2020-05-27 | Lower casing grouting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010462174.5A CN111577138B (en) | 2020-05-27 | 2020-05-27 | Lower casing grouting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111577138A CN111577138A (en) | 2020-08-25 |
| CN111577138B true CN111577138B (en) | 2022-02-11 |
Family
ID=72121651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010462174.5A Active CN111577138B (en) | 2020-05-27 | 2020-05-27 | Lower casing grouting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111577138B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2752430Y (en) * | 2004-12-10 | 2006-01-18 | 吉林石油集团有限责任公司 | Oil layer casing cementing device |
| CN202810655U (en) * | 2012-09-14 | 2013-03-20 | 中国石油化工股份有限公司 | Casing pipe grouting tool |
| CN203022647U (en) * | 2012-12-27 | 2013-06-26 | 中国石油化工股份有限公司 | Casing grouting circulating joint |
| CN203296691U (en) * | 2013-05-28 | 2013-11-20 | 桑峰军 | Automatic air exhausting device of oil well grouting |
| CN203867515U (en) * | 2014-05-07 | 2014-10-08 | 中国石油化工集团公司 | General sleeve grouting device |
| CN108468519A (en) * | 2018-03-22 | 2018-08-31 | 中海石油(中国)有限公司湛江分公司 | Sleeve grouting cap and sleeve grouting method |
-
2020
- 2020-05-27 CN CN202010462174.5A patent/CN111577138B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2752430Y (en) * | 2004-12-10 | 2006-01-18 | 吉林石油集团有限责任公司 | Oil layer casing cementing device |
| CN202810655U (en) * | 2012-09-14 | 2013-03-20 | 中国石油化工股份有限公司 | Casing pipe grouting tool |
| CN203022647U (en) * | 2012-12-27 | 2013-06-26 | 中国石油化工股份有限公司 | Casing grouting circulating joint |
| CN203296691U (en) * | 2013-05-28 | 2013-11-20 | 桑峰军 | Automatic air exhausting device of oil well grouting |
| CN203867515U (en) * | 2014-05-07 | 2014-10-08 | 中国石油化工集团公司 | General sleeve grouting device |
| CN108468519A (en) * | 2018-03-22 | 2018-08-31 | 中海石油(中国)有限公司湛江分公司 | Sleeve grouting cap and sleeve grouting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111577138A (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4674573A (en) | Method and apparatus for placing cement plugs in wells | |
| EP1093540B1 (en) | Method and multi-purpose apparatus for control of fluid in wellbore casing | |
| CA2370186C (en) | Method and multi-purpose apparatus for control of fluid in wellbore casing | |
| RU2351746C2 (en) | Method and system for cementing casing pipe in well borehole with reverse circulation of cement grout | |
| US4867243A (en) | Wellhead isolation tool and setting and method of using same | |
| US6202764B1 (en) | Straight line, pump through entry sub | |
| US8096357B2 (en) | Casing make-up and running tool adapted for fluid and cement control | |
| US9476279B2 (en) | Bell nipple assembly apparatus and methods | |
| EP0556006A1 (en) | Cementing head apparatus | |
| CA1055010A (en) | Wireline sealing apparatus and method for use with a drill string | |
| BR0316189B1 (en) | GUIDANCE SYSTEM AND METHOD FOR A SUBSEA WELL | |
| US8499838B2 (en) | Subsea locking connector | |
| US4317486A (en) | Cementing head apparatus and method of operation | |
| US20170314365A1 (en) | Multi-plug launching system and method | |
| CN111577138B (en) | Lower casing grouting device | |
| US3603385A (en) | Method and apparatus for removably coupling a blowout preventer stack to an underwater wellhead casing | |
| US7150327B2 (en) | Workover unit and method of utilizing same | |
| US20150233204A1 (en) | Tubing hanger | |
| CN107313736B (en) | Novel casing head body bottom connecting device | |
| US11549324B2 (en) | Pumping stinger overshot | |
| CN111520105B (en) | A downhole safety valve | |
| US20050067167A1 (en) | Radial penetrator assembly and method | |
| CA2271530A1 (en) | Circulating nipple and method for setting well casing | |
| CN104481438B (en) | Tail tubing feeding tool used for open well anchoring tie-back well completion technology of multilateral well | |
| CN111946277A (en) | A well control logging cable hanger and its tool assembly and use method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |