CN104564034A - Sealing examining device and sealing examining method for bridge offset well - Google Patents
Sealing examining device and sealing examining method for bridge offset well Download PDFInfo
- Publication number
- CN104564034A CN104564034A CN201410763243.0A CN201410763243A CN104564034A CN 104564034 A CN104564034 A CN 104564034A CN 201410763243 A CN201410763243 A CN 201410763243A CN 104564034 A CN104564034 A CN 104564034A
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- bridge
- sealing
- test
- examining
- well
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Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 210000000078 claw Anatomy 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 96
- 239000007924 injection Substances 0.000 claims description 96
- 210000002445 nipple Anatomy 0.000 claims description 52
- 239000010985 leather Substances 0.000 claims description 20
- 238000005538 encapsulation Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 108091006146 Channels Proteins 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses an examining sealing device and an examining sealing method for a bridge offset well. The sealing examining device comprises an upper flow test short section (1) and a lower flow test short section (4), wherein a sealing section (2) is arranged between the upper flow test short section and the lower flow test short section; a supporting claw (3) is arranged on the lower part of the sealing section; two expansion cups (5) are arranged above the supporting claw at an interval. The device provided by the invention has a double-flow test function; the upper and lower flow test short sections are respectively arranged and tested in oil pipes at the two ends of a bridge offset water distributor; the sizes of flow values at the two ends can be displayed in real time; if the sealing section of the device is tightly sealed with an inner hole of the bridge offset water distributor can be judged according to the display data; the accurate judgment for the working condition of a packer and the increasing for the test working efficiency are benefited; the device is fit for the sealing examining for a bridge type eccentric pipe column water distributor; the technical problem of the present bridge offset sealing examining technique that if the packer is free from sealing examining or an instrument is not tightly sealed cannot be accurately judged when the sealing examining is not performed is solved; the device provided by the invention is simple in structure and convenient in sealing examining operation.
Description
Technical field
the present invention relates to the inclined well packer detecting device of a kind of bridge and test encapsulation method, belonging to well logging apparatus and method and technology field.
Background technology
packer is the important component part of oil-water well separate production and injection tubing string, and major function is the seal isolation realized between stratum.Packer, once lose efficacy, can cause " channeling water " between stratum, and note is adopted efficiency and can significantly be reduced.For ensureing accuracy and the validity of water injection well layering water injection rate, what oil field needed regularly to carry out water injection well packer tests envelope work.
bridge-type eccentric tubing string is the water injection string that oil field is promoted the use of gradually.Cross aquaporin because bridge-type eccentric tubing string injection well downhole flow regulator is provided with bridge-type, therefore the mode of shutoff injection well downhole flow regulator centre gangway can not be adopted when testing envelope as common eccentric tubing string, whether fall to zero judging whether seal-checking instrument device seal section is obturaged according to flow value.
therefore existing bridge is partially tested when envelope is not tested in encapsulation technique existence and accurately cannot be judged that packer does not test envelope or the untight technical barrier of instrument.
Summary of the invention
the object of the invention is to, the inclined well packer detecting device of a kind of bridge is provided and tests encapsulation method, partially test when encapsulation technique exists and do not test envelope accurately cannot judge that packer does not test envelope or the untight technical barrier of instrument to solve existing bridge, thus overcome the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
the inclined well packer detecting device of a kind of bridge of the present invention is that this device comprises flow rate test pipe nipple and down-off test nipple joint; Between upper flow rate test pipe nipple and down-off test nipple joint, be provided with seal section, seal section bottom is provided with support claw, is interval with two bulging leather cups above support claw.
in aforementioned packer detecting device, described upper flow rate test pipe nipple and down-off test nipple joint are respectively equipped with erection device.
a kind of encapsulation method of testing adopting said apparatus to carry out the inclined well of bridge of the present invention is that the method is implemented according to the following steps:
step one, with cable wire or tube connector, inclined for bridge well packer detecting device to be put to the required inclined injection well downhole flow regulator of bridge testing envelope water filling stratum from well head, and the support claw on inclined for bridge well packer detecting device is supported on the support level of the inclined injection well downhole flow regulator of bridge;
step 2, from well head to water filling in oil pipe, after water injection rate is stable, the flow Q that collects of the upper flow rate test pipe nipple of record and down-off test nipple joint respectively
upper note
with flow Q
bet
;
step 3, two the bulging leather cups opened on the inclined well packer detecting device of bridge, close above and below water injection hole on inclined for bridge injection well downhole flow regulator; Again from well head to water filling in oil pipe, after water injection rate is stable, record the flow Q that above flow rate test pipe nipple and down-off test nipple joint collect respectively
upper envelope
with flow Q
lower envelope
;
step 4, twice measurement result to be compared, make and test sealed knot opinion.
in preceding method, the sealed knot opinion of testing in described step 4 comprises the plugging effect of downhole packer and the sealing effectiveness of the inclined well packer detecting device of bridge.
owing to have employed technique scheme, compared with prior art, device of the present invention has two-flow test function in the present invention, tests in the oil pipe that upper and lower flow rate test pipe nipple is placed in the inclined injection well downhole flow regulator two ends of bridge respectively; The size of upper and lower two ends flow value can be shown in real time, can whether seal tight with bridge inclined injection well downhole flow regulator endoporus by judgment means seal section according to display data, to accurately judging that packer operating mode, raising test job efficiency are useful.What be applicable to bridge-type eccentric tubing string injection well downhole flow regulator tests envelope, solves existing bridge and partially tests encapsulation technique and exist when not testing envelope and accurately cannot judge that packer does not test envelope or the untight technical barrier of instrument.Apparatus structure of the present invention is simple, tests envelope easy to operate.
Accompanying drawing explanation
fig. 1 is the structural representation of apparatus of the present invention;
fig. 2 is the structure of oil well schematic diagram adopting bridge-type eccentric tubing string;
fig. 3 is charging state schematic diagram of the present invention;
fig. 4 is that the present invention tests envelope view;
fig. 5 is the partial enlarged drawing of Fig. 3;
fig. 6 is the partial enlarged drawing of Fig. 4.
being labeled as in accompanying drawing: 1-upper flow rate test pipe nipple, 2-seal section, 3-support claw, 4-down-off test nipple joint, 5-bulging leather cup, 6-centralizer, A-sleeve pipe, B-oil pipe, C-water filling stratum, D-packer, the inclined injection well downhole flow regulator of E-bridge, F-water injection hole, G-support level, H-passageway bridge.
Detailed description of the invention
the inclined well packer detecting device of a kind of bridge of the present invention, as shown in Figure 1: this device comprises flow rate test pipe nipple 1 and down-off test nipple joint 4; Between upper flow rate test pipe nipple 1 and down-off test nipple joint 4, be provided with seal section 2, seal section 2 bottom is provided with support claw 3, is interval with two bulging leather cups 5 above support claw 3.Upper flow rate test pipe nipple 1 and down-off test nipple joint 4 are respectively equipped with erection device 6.
a kind of encapsulation method of testing adopting said apparatus to carry out the inclined well of bridge of the present invention is, as shown in Figure 3 and Figure 4, implements according to the following steps:
step one, with cable wire or tube connector, inclined for bridge well packer detecting device to be put to the required inclined injection well downhole flow regulator E of bridge testing envelope water filling stratum C from well head, and the support claw 3 on inclined for bridge well packer detecting device is supported on the support level G of the inclined injection well downhole flow regulator E of bridge;
step 2, from well head to water filling in oil pipe B, after water injection rate is stable, the flow Q that collects of the upper flow rate test pipe nipple 1 of record and down-off test nipple joint 4 respectively
upper note
with flow Q
bet
;
step 3, two the bulging leather cups 5 opened on the inclined well packer detecting device of bridge, close above and below water injection hole F on inclined for bridge injection well downhole flow regulator E; Again from well head to water filling in oil pipe B, after water injection rate is stable, record the flow Q that above flow rate test pipe nipple 1 and down-off test nipple joint 4 collect respectively
upper envelope
with flow Q
lower envelope
;
step 4, twice measurement result to be compared, make and test sealed knot opinion.Conclusion comprises the plugging effect of downhole packer and the sealing effectiveness of the inclined well packer detecting device of bridge.
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
in order to understand principle of the present invention, first the structure of the oil well adopting bridge-type eccentric tubing string is introduced, as shown in Figure 2: the structure of oil well outermost layer that device of the present invention is suitable for is sleeve A, sleeve A directly contacts with the stratum of underground outward, in order to meet the requirement to underground different layers water filling, sleeve A is provided with hole, the water of inflow can be made to enter stratum outside sleeve A.Oil pipe B is provided with in sleeve A, oil pipe B is sealed tube, different layers in oil pipe B is equipped with injection well downhole flow regulator, the present invention is mainly for bridge-type eccentric tubing string oil well, so injection well downhole flow regulator in Fig. 2 adopts is the inclined injection well downhole flow regulator E of bridge, the difference of bridge inclined injection well downhole flow regulator E and common injection well downhole flow regulator is that injection well downhole flow regulator side is provided with passageway bridge H, and water not only can pass through from the centre bore of injection well downhole flow regulator, also can pass through by passageway bridge H.The inclined injection well downhole flow regulator E of bridge is tubular structure, and the bottom of its endoporus is provided with support level G, in order to support downhole instrument.Be provided with water injection hole F in the middle part of the inclined injection well downhole flow regulator E of bridge, in order to stratum water filling, the oil pipe corresponding with the water injection hole F on injection well downhole flow regulator be also provided with hole.Be provided with packer D in gap between sleeve A and oil pipe B, packer D is arranged according to the situation of Different Strata, and be a working lining between upper and lower two packer D, Fig. 2 has only drawn the structure of a working lining, and all the other each layer situations are roughly the same.Envelope is regularly tested mainly in order to check each layer packer D whether to there is poorly sealed problem with sleeve A to oil field.
fig. 1 is the structural representation of apparatus of the present invention; As seen from Figure 1, the epimere of apparatus of the present invention (hereinafter referred to as instrument) is the upper flow rate test pipe nipple 1 of an elongated rod shape, and upper flow rate test pipe nipple 1 is provided with erection device 6, to guarantee that upper flow rate test pipe nipple 1 is positioned at oil pipe B central authorities.The injection flow Q above injection well downhole flow regulator in oil pipe is mainly measured in the effect of flow rate test pipe nipple 1
on
.The stage casing of instrument is seal section 2, and seal section 2 is also elongated rod shape, and the bottom of seal section 2 is provided with support claw 3, when support claw 3 does not work, can be contracted in instrument, opens and be supported on the support level G of injection well downhole flow regulator during work, plays support instrument and positioning action.Seal section 2 above support claw 3 is provided with two bulging leather cups, 5, two bulging leather cups 5 one and is positioned at above the water injection hole F of injection well downhole flow regulator, and another is positioned at below water injection hole F, and its Main Function is opening and closing of fault water injection hole F.When water injection hole F opened by needs, two bulging leather cups 5 shrink, and make to form gap between bulging leather cup 5 and injection well downhole flow regulator endoporus, and current can pass through; As the closed water injection hole F of needs, two bulging leather cup 5 distendings, make bulging leather cup 5 be close to and cut off water stream channel with injection well downhole flow regulator endoporus.The hypomere of instrument is the down-off test nipple joint 4 of an elongated rod shape, and down-off test nipple joint 4 is also provided with erection device 6, to guarantee that down-off test nipple joint 1 is positioned at oil pipe B central authorities.When upper flow rate test pipe nipple 1 and down-off test nipple joint 4 are all positioned at oil pipe B central authorities, the seal section in instrument stage casing is also positioned at oil pipe B central authorities naturally.The injection flow Q below injection well downhole flow regulator in oil pipe is mainly measured in the effect of down-off test nipple joint 4
under
.
fig. 3 is charging state schematic diagram of the present invention; Because this figure aspect ratio is comparatively large, by the restriction of paper size, middle injection well downhole flow regulator place may not see Chu, in order to see the structure at middle injection well downhole flow regulator place clearly, has carried out partial enlargement as shown in Figure 5 to injection well downhole flow regulator.From Fig. 3 and Fig. 5, instrument is supported on the support level G of bridge inclined injection well downhole flow regulator E endoporus by support claw 3, and now, above the firm water injection hole F what a is positioned at injection well downhole flow regulator of two the bulging leather cups 5 on seal section 2, another is positioned at below the water injection hole F of injection well downhole flow regulator.When charging state, two bulging leather cups 5 are all in contraction state.Arrow in Fig. 3 and Fig. 5 represents flow path, from Fig. 3 and Fig. 5, at charging state, a water part above the inclined injection well downhole flow regulator E of bridge can by the gap between injection well downhole flow regulator and instrument and the water injection hole F on injection well downhole flow regulator to the C water filling of water filling stratum, and unnecessary water can flow to below the inclined injection well downhole flow regulator E of bridge from the gap between injection well downhole flow regulator and instrument; Above bridge inclined injection well downhole flow regulator E, another part water can be flowed directly to below the inclined injection well downhole flow regulator E of bridge by the passageway bridge H of injection well downhole flow regulator side.Therefore discharge relation should meet following formula requirement:
q
upper note
=Q
bet
+ Q
hole is noted
in formula: Q
upper note
for the flow that upper flow rate test pipe nipple 1 records at charging state;
q
bet
for the flow that down-off test nipple joint 4 records at charging state;
q
hole is noted
for passing through the flow of water injection hole F to the C water filling of water filling stratum.
q should be met under normal circumstances
bet
< Q
upper note
if do not meet above formula, then the sealing of the packer illustrated between sleeve pipe and oil pipe may go wrong, and the water of other working lining may flow backward to this working lining from water injection hole.
fig. 4 is that the present invention tests envelope view; Because this figure aspect ratio is comparatively large, by the restriction of paper size, middle injection well downhole flow regulator place may not see Chu, in order to see the structure at middle injection well downhole flow regulator place clearly, has carried out partial enlargement as shown in Figure 6 to injection well downhole flow regulator.From Fig. 4 and Fig. 6, instrument is supported on the support level G of bridge inclined injection well downhole flow regulator E endoporus by support claw 3, and now, above the firm water injection hole F what a is positioned at injection well downhole flow regulator of two the bulging leather cups 5 on seal section 2, another is positioned at below the water injection hole F of injection well downhole flow regulator.When testing envelope state, two bulging leather cups 5 are all in distending state.Arrow in Fig. 4 and Fig. 6 represents flow path, from Fig. 4 and Fig. 6, test envelope state because two bulging leather cups 5 are by all closed for water injection hole F upper and lower side, therefore water injection hole F place non-water flow passes through, and the water above injection well downhole flow regulator can only be flowed directly to below the inclined injection well downhole flow regulator E of bridge from the passageway bridge H of injection well downhole flow regulator side.Water injection pressure in oil pipe is constant, discharge relation should meet following formula requirement:
q
upper envelope
=Q
lower envelope
and Q
lower envelope
< Q
bet
in formula: Q
upper envelope
for the flow that upper flow rate test pipe nipple 1 is being tested envelope state and recorded;
q
lower envelope
for the flow that down-off test nipple joint 4 is being tested envelope state and recorded;
q
bet
for the flow that down-off test nipple joint 4 records at charging state.
if Q
upper envelope
≠ Q
lower envelope
, and Q
lower envelope
< Q
upper envelope
, then the bulging leather cup 5 above explanation water injection hole F is poorly sealed or damage completely, and some water flows to water filling stratum C by water injection hole F.
if Q
upper envelope
≠ Q
lower envelope
, and Q
lower envelope
=Q
bet
time, then illustrate that two bulging leather cups 5 on instrument cannot distending or damage completely, this state is equivalent to charging state.
Embodiment
during concrete enforcement, first press the device of the present invention of structure fabrication shown in Fig. 1 (bridge inclined well seal-checking instrument device, hereinafter referred to as instrument), then by method shown in Fig. 3 and Fig. 5, instrument is put to the required stratum testing envelope, and instrument is supported on the support level of injection well downhole flow regulator.Then first the flow Q above the inclined injection well downhole flow regulator E of bridge in oil pipe is measured at charging state by the upper flow rate test pipe nipple 1 on instrument
upper note
, and measure the flow Q above the inclined injection well downhole flow regulator E of bridge in oil pipe by the down-off test nipple joint 4 on instrument
bet
.Flow Q above the inclined injection well downhole flow regulator E of bridge in oil pipe is measured testing envelope state again by the upper flow rate test pipe nipple 1 on instrument
upper envelope
, and measure the flow Q above the inclined injection well downhole flow regulator E of bridge in oil pipe by the down-off test nipple joint 4 on instrument
lower envelope
.By can whether seal tight with bridge inclined injection well downhole flow regulator endoporus by judgment means seal section to above-mentioned survey data, to accurately judging that packer operating mode, raising test job efficiency are useful.
Claims (4)
1. the inclined well packer detecting device of bridge, is characterized in that: this device comprises flow rate test pipe nipple (1) and down-off test nipple joint (4); Between upper flow rate test pipe nipple (1) and down-off test nipple joint (4), be provided with seal section (2), seal section (2) bottom is provided with support claw (3), and support claw (3) top is interval with two bulging leather cups (5).
2. the inclined well packer detecting device of bridge according to claim 1, is characterized in that: described upper flow rate test pipe nipple (1) and down-off test nipple joint (4) are respectively equipped with erection device (6).
3. what adopt the inclined well of bridge described in claim 1 or 2 packer detecting device to carry out the inclined well of bridge tests an encapsulation method, it is characterized in that: the method adopts above-mentioned bridge inclined well packer detecting device to test envelope to the inclined well of bridge; Its step is as follows:
Step one, with cable wire or tube connector, inclined for bridge well packer detecting device to be put to the required inclined injection well downhole flow regulator of bridge (E) testing envelope water filling stratum (C) from well head, and the support claw (3) on inclined for bridge well packer detecting device is supported on the support level (G) of the inclined injection well downhole flow regulator of bridge (E);
Step 2, from well head to oil pipe (B) interior water filling, after water injection rate is stable, the flow Q that collects of the upper flow rate test pipe nipple (1) of record and down-off test nipple joint (4) respectively
upper notewith flow Q
bet;
Step 3, two bulging leather cups (5) of opening on the inclined well packer detecting device of bridge, close above and below upper for inclined for bridge injection well downhole flow regulator (E) water injection hole (F); Again from well head to oil pipe (B) interior water filling, after water injection rate is stable, record the flow Q that above flow rate test pipe nipple (1) and down-off test nipple joint (4) collect respectively
upper envelopewith flow Q
lower envelope;
Step 4, twice measurement result to be compared, make and test sealed knot opinion.
4. according to claim 3 the inclined well of bridge test encapsulation method, it is characterized in that: in described step 4 test sealed knot opinion comprise the plugging effect of downhole packer and the sealing effectiveness of the inclined well packer detecting device of bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763243.0A CN104564034B (en) | 2014-12-13 | 2014-12-13 | A kind of inclined well packer detecting device of bridge and test encapsulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763243.0A CN104564034B (en) | 2014-12-13 | 2014-12-13 | A kind of inclined well packer detecting device of bridge and test encapsulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104564034A true CN104564034A (en) | 2015-04-29 |
| CN104564034B CN104564034B (en) | 2018-09-25 |
Family
ID=53081019
Family Applications (1)
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|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156093A (en) * | 2015-07-14 | 2015-12-16 | 中国石油天然气股份有限公司 | Bridge type concentric testing, adjusting, testing and sealing integrated testing instrument |
| CN105422047A (en) * | 2015-10-16 | 2016-03-23 | 贵州航天凯山石油仪器有限公司 | Whole-pipe descaling device allowing descaling modes to be switched and whole-pipe descaling method |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electric delivery short section and delivery method |
| CN109931050A (en) * | 2019-05-08 | 2019-06-25 | 中国石油大学(华东) | It is a kind of flushing test alter with injection well downhole flow regulator test envelope integrated testing tool |
| CN110863796A (en) * | 2019-12-11 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Electric pressure relief method and device for sealing section |
| CN111322041A (en) * | 2020-04-14 | 2020-06-23 | 四川省科学城久利电子有限责任公司 | A water distribution device for oil fields |
| CN111364957A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Miniaturized constant-current water distribution structure and detection device thereof |
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