CN204267000U - A kind of tune Flow Control water pipe post and a kind of wellbore construction - Google Patents
A kind of tune Flow Control water pipe post and a kind of wellbore construction Download PDFInfo
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- CN204267000U CN204267000U CN201420676187.2U CN201420676187U CN204267000U CN 204267000 U CN204267000 U CN 204267000U CN 201420676187 U CN201420676187 U CN 201420676187U CN 204267000 U CN204267000 U CN 204267000U
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- water pipe
- control water
- pipe nipple
- base tube
- filter sand
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 210000002445 nipple Anatomy 0.000 claims abstract description 93
- 239000004576 sand Substances 0.000 claims abstract description 71
- 239000012530 fluid Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a kind of and adjusts Flow Control water pipe post and a kind of wellbore construction.Wherein, this tune Flow Control water pipe post comprises base tube pipe nipple, external control water pipe nipple, internal control water pipe nipple, filter sand layer connecting short section and water-control sieve tube, water-control sieve tube is made up of base tube and filter sand layer, base tube two ends are threaded internal control water pipe nipple respectively, the other end of internal control water pipe nipple is threaded base tube pipe nipple, it is inner that internal control water pipe nipple is placed in external control water pipe nipple, its outer wall being connected one end with base tube pipe nipple welds with the inwall of external control pipe nipple, leave space between inwall between remainder and external control water pipe nipple, form annular flow passage; Internal control water pipe nipple have been got on the bus multiple axial notch being connected side with sand screen pipe nipple, and on middle annular groove, the position of respective slot is provided with multiple installing hole, for installing throttle nozzle; On external control water pipe nipple, correspondence arranges multiple installing hole, for installing nozzle end cap; Form one whole and adjust stream water-control sieve tube completion tubular column, simple and reliable for structure, to enter under convenient, fast changeable oil nozzle, simplify horizontal well and adjust stream water-control sieve tube completion construction technology.
Description
Technical field
The utility model relates to oil and gas exploitation field, particularly a kind ofly adjusts Flow Control water pipe post and a kind of wellbore construction with this tune Flow Control water pipe post.
Background technology
In recent years, horizontal well technology is widely applied, and how farthest to ensure that the various piece of horizontal segment can be balanced the production, and realizing effectively control water is the major issue faced in horizontal well development.Current horizontal well control water completion technique mainly contains variable density perforating technology, dual-string completion technology, and intelligence flows into control technology, center management and control water completion technique and tune stream water-control sieve tube completion technique etc.Wherein, horizontal well adjust stream water-control sieve tube completion to have cost is low, control accuracy is high, to technical advantages such as the pollution of oil reservoir are little.
The horizontal well of domestic and international routine adjusts stream water-control sieve tube tubing string to be install in the end of conventional screen to adjust Flow Control water pipe nipple, exchange Flow Control water pipe nipple according to Oil Field electrical measurement result and finishing drilling data to carry out parameter adjustment or change whole tune Flow Control water pipe nipple, then the tune Flow Control water pipe nipple after adjusting is carried out docking after by dress in conventional screen at the scene and enter well.But this kind of design, exists execute-in-place operation many, length consuming time, docking junction reliability is relatively poor, enters the deficiencies such as well operational sequence relative complex.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned defect overcoming known technology existence, and a kind of Flow Control water pipe post of adjusting is provided, can ensure that Stability Analysis of Structures is reliable, continuous and effective control water, can conveniently carry out again controlling the adjustment of water assembly and installation, facilitate the assembling of Oil Field and under enter.
The utility model is achieved through the following technical solutions, the one provided according to the utility model adjusts Flow Control water pipe post, wherein, comprise base tube pipe nipple, external control water pipe nipple, internal control water pipe nipple, water-control sieve tube and filter sand layer connecting short section, described water-control sieve tube is made up of base tube and filter sand layer, described base tube two ends respectively external screw thread connect internal control water pipe nipple, the other end of described internal control water pipe nipple is threaded base tube pipe nipple, it is inner that described internal control water pipe nipple is placed in external control water pipe nipple, the inwall of its outer wall and external control water pipe nipple of being connected one end with base tube pipe nipple is welded to connect, space is left between inwall between remainder and external control water pipe nipple, form annular flow passage, described internal control water pipe nipple have been got on the bus multiple axial notch at the outer wall being connected side with base tube, this groove is the flow channel of stratum production fluid flow to throttle nozzle, described internal control water pipe nipple middle part indent forms annular groove, the position that described annular groove is corresponding with each axial notch has installing hole, for installing throttle nozzle, on described external control water pipe nipple, correspondence arranges multiple installing hole, for installing nozzle end cap, inwall and the filter sand layer connecting short section outer wall be enclosed within base tube of the described external control water pipe nipple other end are tightly connected, the described filter sand layer connecting short section other end and filter sand layer are welded to connect, and be provided with axial diversion passage and make stratum production fluid flow to throttle nozzle between described filter sand layer connecting short section inwall and described base tube outer wall.
The utility model can also take following technical scheme to realize further:
Aforesaid tune Flow Control water pipe post, wherein, described installing hole is provided with nozzle carrier, described throttle nozzle is arranged on nozzle carrier in the mode of screw thread grafting.
Aforesaid tune Flow Control water pipe post, wherein, the axial notch on described internal control water pipe nipple is 4, symmetrical vertically.
Aforesaid tune Flow Control water pipe post, wherein, the diameter range of described throttle nozzle is 1.6-5.0mm.
Aforesaid tune Flow Control water pipe post, wherein, described external control water pipe nipple and filter sand layer connecting short section adopt insertion to be tightly connected.
Aforesaid tune Flow Control water pipe post, wherein, one end inwall that described filter sand layer connecting short section is connected with filter sand layer is provided with axial notch, and the lug boss of described groove welds with base tube outer wall; Described filter sand layer is made up of wrapping wire skeleton, perforated pipe, diffuser screen, filter sand net and outside protective pipe from inside to outside.
Aforesaid tune Flow Control water pipe post, wherein, the described base tube pipe nipple other end connects a box cupling, and described box cupling is adjusted Flow Control water pipe post, blind pipe for linking next root or is used as to beat elevator.
Aforesaid tune Flow Control water pipe post, wherein, described internal control water pipe nipple adopts the metal material with high abrasion-resistance.
Compared with prior art, tune Flow Control water pipe post of the present utility model will control water assembly and sand screen assemblies combination, form one whole and adjust stream water-control sieve tube completion tubular column, integral tube rod structure is simple and reliable, enter under convenient, fast changeable oil nozzle, simplify horizontal well and adjust stream water-control sieve tube completion construction technology, achieve and adjust Flow Control water and sand prevention integrated.
The utility model also provides a kind of the utility model to additionally provide a kind of wellbore construction, comprising: pipeline section, vertically Open-Hole Section and horizontal bare hole section, wherein, be provided with the above-mentioned tune Flow Control water pipe post be connected in series successively in the flow string of described horizontal bare hole section.
The utility model additionally provides another kind of wellbore construction, comprise: pipeline section, vertically Open-Hole Section and horizontal bare hole section, some packers are provided with in described horizontal bare hole section, wherein, horizontal bare hole section is divided into some sections by described packer, can comprise one or more above-mentioned tune Flow Control water pipe post be connected in series successively in each section.
Accompanying drawing explanation
Fig. 1 is that the utility model adjusts Flow Control water pipe rod structure generalized section;
Fig. 1-1 is the partial cutaway schematic of Fig. 1;
Fig. 2-1 is the utility model internal control water pipe nipple structural representation;
Fig. 2-2 is the partial cutaway schematic of Fig. 2-1;
Fig. 3-1 is the utility model external control water pipe nipple structural representation;
Fig. 3-2 is the partial cutaway schematic of Fig. 3-1;
Fig. 4-1 is the utility model filter sand layer connecting short section structural representation;
Fig. 4-2 is the partial cutaway schematic of Fig. 4-1;
Fig. 5 uses the wellbore construction schematic diagram adjusting stream water-control sieve tube tubing string;
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, to structure of the present utility model, feature and effect thereof, be described in detail as follows:
As shown in Figure 1, the one that the utility model provides adjusts Flow Control water pipe post, wherein, comprise base tube pipe nipple 10, external control water pipe nipple 11, internal control water pipe nipple 12, water-control sieve tube and filter sand layer connecting short section 13, described water-control sieve tube is made up of base tube 16 and filter sand layer 14, described base tube 16 two ends respectively external screw thread connect internal control water pipe nipple 12, the other end of described internal control water pipe nipple 12 is threaded base tube pipe nipple 10, it is inner that described internal control water pipe nipple 12 is placed in external control water pipe nipple 11, the inwall of its outer wall and external control pipe nipple of being connected one end with base tube pipe nipple 10 is welded to connect, space is left between 11 inwalls between remainder and external control water pipe nipple, form annular flow passage,
As shown in Fig. 2-1,2-2, described internal control water pipe nipple 12 have been got on the bus multiple axial notch 121 at the outer wall being connected side with base tube, described internal control water pipe nipple middle part indent forms annular groove 122, the position that described annular groove is corresponding with each axial notch has installing hole 123, for installing throttle nozzle 18; Preferably, described axial notch is 4, symmetrical vertically.
Preferably, the described optional metal material with having high abrasion-resistance of internal control water pipe nipple, thus the abrasion-resistance improving tubing string;
On described external control water pipe nipple 11, correspondence arranges multiple installing hole 111 (as shown in Fig. 3-1,3-2), for installing nozzle end cap 17; Other end inwall and the filter sand layer connecting short section outer wall be enclosed within base tube of described external control water pipe nipple are tightly connected; Preferably, described external control water pipe nipple and filter sand layer connecting short section adopt to insert and seal.As described in external control water pipe nipple inwall or filter sand layer pipe nipple outer wall offer seal groove and sealing ring 15 be set in seal groove and realize; Such as can offer two seals groove, but be not restricted to this.Thus, inwall and the filter sand layer connecting short section outer wall of external control water pipe nipple adopt matched in clearance, when connecting, filter sand layer connecting short section being inserted the relevant position of external control water pipe nipple, sealing by sealing ring.Ensure that the fluid entering control water section does not leak, its sealing load is at more than 40MPa.Adopt this structure, control water section and sand control part can be dismantled temporarily, thus achieve when controlling water section or sand control partial destruction, can quick-replaceable be carried out.
Described filter sand layer connecting short section 13 other end and filter sand layer 14 are welded to connect, and be provided with axial diversion passage and make stratum production fluid flow to throttle nozzle 18 between described filter sand layer connecting short section inwall and described base tube 16 outer wall.Preferably, one end inwall that described filter sand layer connecting short section is connected with filter sand layer is provided with axial notch 131 (as shown in Fig. 4-1,4-2), and the lug boss of described groove welds with base tube outer wall; Described groove provides passage to Flow in Nozzle for stratum production fluid.
Stratum production fluid enters the axial diversion passage between described base tube outer wall and filter sand layer from filter sand laminar flow, and layer of sand connecting short section after filtration, annular flow passage in inside and outside control water pipe nipple and axial notch flow in throttle nozzle, after throttle nozzle choke pressure drop, finally enter substrate tube.
By above structure, tune Flow Control water assembly and screen assemblies are connected formation one endowel, eliminate the conventional composite design adjusting Flow Control water pipe post to adopt ramp metering device to be connected with screen casing; Nozzle is arranged on internal control water pipe nipple, the parasitic pressure drop of this well section of adjustable, thus the inflow profile of whole horizontal segment is uniformly distributed.The replacing of throttle nozzle can be realized by the nozzle end cap of opening installation on external control water pipe nipple, for the nozzle to different well section configuration different inner diameters, after situ configuration adjustment jet size, nozzles available end cap seal external control water pipe nipple.
In addition, the usage quantity of nozzle and the large I of nozzle diameter are optimized adjustment according to Oil Field electrical measurement result and horizontal well in segments situation, and the adjustable range of nozzle diameter is 1.6-5.0mm, and the throttle nozzle available dedicated nozzle plug do not used seals.
Present embodiment can realize further by structure below:
Aforesaid tune Flow Control water pipe post, wherein, described installing hole is provided with nozzle carrier, described throttle nozzle is arranged on nozzle carrier in the mode of screw thread grafting.
Aforesaid tune Flow Control water pipe post, wherein, described filter sand layer is made up of (as Figure 1-1) wrapping wire skeleton 142, perforated pipe 143, diffuser screen 144, filter sand net 145 and outside protective pipe 146 from inside to outside;
Described wrapping wire skeleton, perforated pipe, diffuser screen, filter sand net can adopt and be fixed together in the mode of welding edges; When filter sand layer pipe nipple welds with filter sand layer, only need weld from outside, filter sand layer pipe nipple and outer jointing jacket are welded together.
By the skeleton of innermost layer having been made into the solid frame of wrapping wire, thus make to leave axial flow channel 141 between base tube and filter sand layer, the height of flow channel is 4-6mm, and stratum production fluid finally flows into throttle nozzle by the recess channels flowed in inside and outside control water pipe nipple by this axial flow channel after filter sand layer.Perforated pipe is used for being formed between wrapping wire skeleton and filter sand net supporting; Diffuser screen can ensure to have better mobility by the fluid of filter sand net; Filter sand net is for filtering the sand grains in the production fluid of stratum, and filter sand net can be optimized configuration according to sand grains size in the production fluid of stratum; Outer jointing jacket for the protection of whole filter sand layer go into the well and manufacturing process in not damaged.Therefore, better can be filtered the sand grains in the production fluid of stratum by above-mentioned composite filter layer of sand, thus reduce the erosion attack of fluid mutual-spraying mouth.
Aforesaid tune Flow Control tubing string, wherein, the described base tube pipe nipple other end connects a box cupling 9, and described box cupling is adjusted Flow Control water pipe post, blind pipe for linking next root or is used as to beat elevator.Enter at the scene in well application, base tube pipe nipple is as pipe nipple of checking card.
Compared with prior art, the utility model at least has the advantage of the following aspects:
(1) adopt inside and outside control water pipe nipple to design, nozzle can realize on-the-spot Fast Installation and change configuration adjustment, and operation is simple and reliable, thus can be optimized adjustment according to the flow of field measurement well log curve to different well section;
(2) there is at the two ends of tubing string control water pipe nipple, formation fluid is entered the annular space in tubing string by filter sand layer after, fluid can annularly flow in nearest nozzle about space, decreases the friction pressure drop of fluid in this annular space, improves and adjusts Flow Control water management precision;
(3) tubing string adopts integration, full-bore design, and the complete withstand voltage properties of tubing string overall structure is good, and no-movable part, according to the difference of operating condition, can adopt common box cupling to connect between two endowels, convenient and reliable;
(4) special flow channel is left between filter sand layer connecting short section and inside and outside control water pipe nipple, ensure that fluid is unimpeded in flowing between the two, screen cloth can well filter the sand grains in the production fluid of stratum simultaneously, thus reduces fluid to the erosion attack of water control device.
(5) between filter sand layer connecting short section with inside and outside control water pipe nipple, pipe adopts and is threaded, outside employing insertion is tightly connected, both ensure that the high-seal of control water section and sand control part, bearing capacity is at more than 40MPa, also the detachable function of control water section and sand control part is remained, in the event that it should fail, the replacing of sand control part or control water section can be realized under the prerequisite not destroying overall tune Flow Control water pipe post.
In sum, tune Flow Control water pipe post of the present utility model will control water assembly and sand screen assemblies combination, form one whole and adjust stream water-control sieve tube completion tubular column, integral tube rod structure is simple and reliable, enter under convenient, fast changeable oil nozzle, simplify horizontal well and adjust stream water-control sieve tube completion construction technology, achieve and adjust Flow Control water and sand prevention integrated.
As shown in Figure 5, the utility model additionally provides a kind of wellbore construction, comprising: pipeline section 1, vertically Open-Hole Section 2 and horizontal bare hole section 3, wherein, be provided with the above-mentioned tune Flow Control water pipe post 6 be connected in series successively in the flow string 4 of described horizontal bare hole section 3.
If zones of different or well section need be made to isolate mutually along Open-Hole Section 3, pipeline section 1, vertically Open-Hole Section 2 and horizontal bare hole section 3, then can use packer 5 that horizontal bare hole section 3 is divided into some sections, one or more above-mentioned tune Flow Control water pipe post be connected in series successively in each section, can be comprised.
In practical application, stratum production fluid 7 enters flow string 3 after output from reservoir 8 after adjusting Flow Control water pipe post 6 to adjust stream, finally flow to earth's surface.
The above is only preferred embodiment of the present utility model, and every any simple modification of carrying out above embodiment according to the technical solution of the utility model and equivalents, all belong to the scope of the utility model protection.
Claims (10)
1. adjust Flow Control water pipe post for one kind, it is characterized in that, comprise base tube pipe nipple, external control water pipe nipple, internal control water pipe nipple, water-control sieve tube and filter sand layer connecting short section, described water-control sieve tube is made up of base tube and filter sand layer, described base tube two ends respectively external screw thread connect internal control water pipe nipple, the other end of described internal control water pipe nipple is threaded base tube pipe nipple, it is inner that described internal control water pipe nipple is placed in external control water pipe nipple, the inwall of its outer wall and external control water pipe nipple of being connected one end with base tube pipe nipple is welded to connect, space is left between inwall between remainder and external control water pipe nipple, form annular flow passage, described internal control water pipe nipple have been got on the bus multiple axial notch at the outer wall being connected side with base tube, this groove is the flow channel of stratum production fluid flow to throttle nozzle, described internal control water pipe nipple middle part indent forms annular groove, the position that described annular groove is corresponding with each axial notch has installing hole, for installing throttle nozzle, on described external control water pipe nipple, correspondence arranges multiple installing hole, for installing nozzle end cap, inwall and the filter sand layer connecting short section outer wall be enclosed within base tube of the described external control water pipe nipple other end are tightly connected, the described filter sand layer connecting short section other end and filter sand layer are welded to connect, and be provided with axial diversion passage and make stratum production fluid flow to throttle nozzle between described filter sand layer connecting short section inwall and described base tube outer wall.
2. tune Flow Control water pipe post according to claim 1, it is characterized in that, described installing hole is provided with nozzle carrier, and described throttle nozzle is arranged on nozzle carrier in the mode of screw thread grafting.
3. tune Flow Control water pipe post according to claim 2, is characterized in that, the axial notch of described internal control water pipe nipple is 4, symmetrical vertically.
4. tune Flow Control water pipe post according to claim 1, is characterized in that, the diameter range of described throttle nozzle is 1.6-5.0mm.
5. tune Flow Control water pipe post according to claim 1, is characterized in that, described external control water pipe nipple and filter sand layer connecting short section adopt insertion to be tightly connected.
6. the tune Flow Control water pipe post according to any one of 5 of claim 1, is characterized in that, one end inwall that described filter sand layer connecting short section is connected with filter sand layer is provided with axial notch, and the lug boss of described groove welds with base tube outer wall; Described filter sand layer is made up of wrapping wire skeleton, perforated pipe, diffuser screen, filter sand net and outside protective pipe from inside to outside.
7. tune Flow Control water pipe post according to claim 6, is characterized in that, the described base tube pipe nipple other end connects a box cupling, and described box cupling is adjusted Flow Control water pipe post, blind pipe for linking next root or is used as to beat elevator.
8. tune Flow Control water pipe post according to claim 7, is characterized in that, described internal control water pipe nipple adopts the metal material with high abrasion-resistance.
9. a wellbore construction, comprising: pipeline section, vertically Open-Hole Section and horizontal bare hole section, is characterized in that, be provided with the tune Flow Control water pipe post in the claim 1 to 8 be connected in series successively described in any one in the flow string of described horizontal bare hole section.
10. a wellbore construction, comprise: pipeline section, vertically Open-Hole Section and horizontal bare hole section, some packers are provided with in described horizontal bare hole section, it is characterized in that, horizontal bare hole section is divided into some sections by described packer, can comprise the tune Flow Control water pipe post in one or more claim 1 to 8 be connected in series successively described in any one in each section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676187.2U CN204267000U (en) | 2014-11-07 | 2014-11-07 | A kind of tune Flow Control water pipe post and a kind of wellbore construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676187.2U CN204267000U (en) | 2014-11-07 | 2014-11-07 | A kind of tune Flow Control water pipe post and a kind of wellbore construction |
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| Publication Number | Publication Date |
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| CN204267000U true CN204267000U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420676187.2U Expired - Lifetime CN204267000U (en) | 2014-11-07 | 2014-11-07 | A kind of tune Flow Control water pipe post and a kind of wellbore construction |
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| CN (1) | CN204267000U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555569A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Control water conservancy project tool |
| CN110671080A (en) * | 2018-07-02 | 2020-01-10 | 中国石油化工股份有限公司 | Filling tool assembly, self-adaptive water screen pipe string and experimental method |
| CN112696543A (en) * | 2020-12-28 | 2021-04-23 | 中国科学院广州能源研究所 | Sand-proof water-control device for oil-gas extraction |
| CN112878983A (en) * | 2021-01-06 | 2021-06-01 | 北京合力奇点科技有限公司 | Intelligent production dynamic monitoring flow-regulating water-controlling well completion method for oil and gas well |
-
2014
- 2014-11-07 CN CN201420676187.2U patent/CN204267000U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555569A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Control water conservancy project tool |
| CN110671080A (en) * | 2018-07-02 | 2020-01-10 | 中国石油化工股份有限公司 | Filling tool assembly, self-adaptive water screen pipe string and experimental method |
| CN112696543A (en) * | 2020-12-28 | 2021-04-23 | 中国科学院广州能源研究所 | Sand-proof water-control device for oil-gas extraction |
| CN112878983A (en) * | 2021-01-06 | 2021-06-01 | 北京合力奇点科技有限公司 | Intelligent production dynamic monitoring flow-regulating water-controlling well completion method for oil and gas well |
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