CN114687706A - Many rounds of sand washing flowing back integration tubular column - Google Patents
Many rounds of sand washing flowing back integration tubular column Download PDFInfo
- Publication number
- CN114687706A CN114687706A CN202011598632.4A CN202011598632A CN114687706A CN 114687706 A CN114687706 A CN 114687706A CN 202011598632 A CN202011598632 A CN 202011598632A CN 114687706 A CN114687706 A CN 114687706A
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- Prior art keywords
- pump
- rod
- pipe
- sand washing
- oil
- 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.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 56
- 238000005406 washing Methods 0.000 title claims abstract description 44
- 230000010354 integration Effects 0.000 title description 3
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 12
- 239000003129 oil well Substances 0.000 claims description 11
- 210000000078 claw Anatomy 0.000 claims description 7
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- 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)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to an oil field downhole operation tool, in particular to a multi-round sand washing and liquid discharging integrated pipe column. It comprises a centralizer, a sucker rod, a rod pump, an outer pipe and a soluble ball; the centralizer is fixed on the upper part of the sucker rod, and the sucker rod is connected with a rod pump; the sucker rod and the rod pump are arranged in the outer pipe, the soluble ball is arranged between the lower end of the rod pump and the oil pipe, and the space between the lower end of the rod pump and the oil pipe can be sealed. The integrated pipe column can realize sand washing and liquid drainage for many times on the basis of no moving pipe column, thereby greatly reducing the workload and shortening the operation period.
Description
Technical Field
The invention relates to an oil field downhole operation tool, in particular to a multi-round sand washing and liquid draining integrated pipe column.
Background
The oil field is victory to take out oil well reservoir mud matter content deeply, and in the production process, mud and fine sand get into the pit shaft along with the output medium, and along with the extension of production time, the silt sand of output can bury the stratum and use loose sandstone as the main, though adopt measures such as mechanical sand control, chemical sand control, guarantee that large granule sand is not output, but tiny silt sand still produces, can cause sand to bury the oil reservoir problem. The main process method adopted at present adopts oil pipe sand washing, coiled pipe sand washing and jet pump sand washing, (1) sand washing in a shaft is carried out by adopting a sand washing pipe column, when the returned liquid reaches the standard, the sand washing pipe column is put out, and then a production pipe column is put in. The process method has a plurality of operation procedures and increases the scrappage of the oil pipe. (2) The sand washing operation of the coiled tubing has high operation speed, but the lifting pipe column in the well needs to be lifted out, and then sand washing is carried out. The cost is high. (3) The hydraulic jet pump sand washing has the same problems, a production pipe column needs to be lifted out, a construction pipe column needs to be put in, and the operation process is complex.
Chinese utility model patent CN206707678U discloses a be used for sand production oil well sand washing to change and take out integration tubular column, it includes from last to continuous in proper order down take out oil pipe, special oil-well pump, tail pipe, sawtooth towards the sand head, special oil-well pump includes outer pump casing, pump barrel, plunger assembly and standing valve, the pump barrel is installed in outer pump casing to link to each other with outer pump barrel, plunger assembly and pump barrel inner chamber phase-match, the standing valve links to each other with the tip of pump barrel. The positive and negative sand washing well is realized by putting a pumping pipe column without a valve ball (without a plunger assembly) and arranging a sawtooth sand washing head at the bottom; after sand washing, the ground is thrown into the fixed valve, the ground presses the valve ball into the seat and is clamped in the one-way supporting fence, and the valve ball is lowered into the plunger assembly to pump oil after the pressure test is qualified, so that the sand washing pipe column is lowered and taken out once, sand washing rotary pumping oil production with a pump of 44-56mm is realized, the sand washing cost of a pump is reduced, and the development benefit of an oil field is improved.
The Chinese utility model patent CN209354081U is a positive sand-flushing oil-well pump, wherein a fixed valve mechanism is arranged at the bottom of a pump cylinder, a plunger is driven by a sucker rod to move upwards in the pump cylinder, and a traveling valve mechanism is arranged on the plunger; a sand washing and well washing device is connected in the pump cylinder; the sand washing and well washing device comprises an outer pipe, the outer pipe is connected and arranged in a pump cylinder, a plurality of through holes are formed in the pipe wall of the outer pipe along the circumferential direction, a sliding sleeve is arranged on the inner wall surface of the outer pipe, a clamping edge is arranged on the inner wall of the outer pipe, the top of the sliding sleeve abuts against the clamping edge from bottom to top, a fixing ring is fixedly arranged on the inner wall of the bottom end of the outer pipe, and a spring is arranged between the fixing ring and the bottom end of the sliding sleeve; the sliding sleeve is supported by a spring to shield the through hole; the inner wall aperture of the sliding sleeve is smaller than the inner diameters of the clamping edge and the fixing ring. The positive sand flushing oil well pump can carry out positive well flushing sand flushing, adopts a well flushing mode that the well flushing liquid is injected from the oil pipe and passes through the oil well pump from top to bottom, does not need a special well flushing mechanism, does not need to lift the oil pumping pipe column out of the ground, can realize the flushing of the oil pipe, the oil well pump and the sieve pipe, and has simple structure and convenient operation.
Chinese utility model patent CN2176452Y discloses a pump is annotated to many rounds for viscous crude thermal recovery, sealed plunger (12) lower part and slide cartridge salvage seat (14) are connected on it, inside has can drag for oil feed slide cartridge (13), this can drag for oil feed slide cartridge (13) lower part and oil feed valve cover (15) and be connected, oil feed valve ball (16) and oil feed valve seat (17) are located oil feed valve seat connecting cylinder (18) upper portion, lower sealed plunger (19) are connected with oil feed valve seat connecting cylinder (18), there is sealing ring (20) lower part of lower sealed plunger (19), seal receptacle (21), sealed jump ring joint (22), jump ring cylinder (23), pressure spring joint (24), oil feed fixed cylinder (25).
Although the above-mentioned pipe column can implement sand-washing and liquid-discharging, it can not implement sand-washing and pumping and liquid-discharging for several times.
Disclosure of Invention
The invention mainly aims to provide a multi-round sand washing and liquid discharging integrated pipe column which can realize multi-round sand washing and liquid discharging on the basis of a fixed pipe column, greatly reduce the workload and shorten the operation period.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a multi-round sand washing and liquid draining integrated tubular column, which comprises a centralizer, a sucker rod, a rod pump and an outer tube, wherein the sucker rod is arranged on the outer tube; the centralizer is fixed on the upper part of the sucker rod, and the sucker rod is connected with a rod pump; the sucker rod and the rod pump are arranged in the outer pipe.
Furthermore, the outer diameter of the centralizer is smaller than the inner diameter of the oil pipe, so that wax and scale on the inner wall of the oil pipe can be scraped when the rod column is pulled up and down, the motion of the rod column, the downward movement of the rod pump and the smooth passing of a soluble ball are guaranteed.
Furthermore, the multi-round sand washing and draining integrated tubular column further comprises a soluble ball, and the soluble ball is arranged at the bottom end of the rod pump.
Furthermore, the soluble ball is arranged between the lower end of the rod pump and the oil pipe, and the space between the lower end of the rod pump and the oil pipe can be sealed.
Further, the rod pump includes: the device comprises a centralizing head, a pull rod, a pump barrel, a plunger, a sealing seat and a locking claw;
the upper end of the pump barrel is provided with a centering head, the lower end of the pump barrel is provided with a sealing seat, and a locking claw is arranged below the sealing seat; the pull rod is connected with the plunger piston and is arranged in the pump cylinder together.
Furthermore, the outer diameter of the centering head is the maximum outer diameter of the rod pump, the outer diameter of the centering head is close to the inner diameter of the oil pipe, the pump barrel can be centered, the oil pump is guaranteed not to swing during working, the centering head is provided with flow channels which are circumferentially distributed and can be communicated with the upper portion and the lower portion of the oil pipe, and the diameter of each channel is larger than 5 times of the diameter of the fracturing sand.
Further, the seal seat may be seated within the pump barrel and form a conical seal.
Compared with the prior art, the invention has the following advantages:
by adopting the integrated pipe column, when the oil layer can not be produced due to the sand produced by the oil well after the oil well is produced for a period of time, the oil pumping rod and the rod pump can be lifted without moving the pipe column, the coiled pipe or the continuous oil pipe is put in, so that the sand washing pipe can reach the oil layer, the well is washed by utilizing ground equipment, after the well is washed to reach the index, the coiled pipe is lifted or part of the oil pipe is lifted out, then the soluble ball is put in, the pressure test of the pipe column is carried out, and the rod pump and the oil pumping rod are put in again to pump oil after the pipe column is qualified.
The integrated pipe column can realize sand washing and liquid drainage for many times on the basis of no moving pipe column, thereby greatly reducing the workload and shortening the operation period.
The integrated tubular column has a simple structure and is easy to install and operate.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of an integrated pipe column for sand washing and drainage for multiple rounds according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a rod pump in a multi-pass sand washing and draining integrated tubular column according to an embodiment of the present invention.
Wherein, the device comprises a centralizer 1, a sucker rod 2, a rod pump 3, an outer tube 4, a soluble ball 5, a centralizing head 3-1, a pull rod 3-2, a pump barrel 3-3, a plunger 3-4, a sealing seat 3-5 and a locking claw 3-6.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
As shown in figure 1, the multi-round sand washing and liquid draining integrated tubular column comprises a centralizer 1, a sucker rod 2, a rod pump 3, an outer tube 4 and a soluble ball 5. The centralizer 1 is fixed on the upper part of the sucker rod 2, and the sucker rod 2 is connected with the rod pump 3; the sucker rod 2 and the rod pump 3 are arranged in the outer pipe 4. The soluble ball 5 is arranged between the lower end of the rod pump 3 and the oil pipe, and the space between the lower end of the rod pump 3 and the oil pipe can be sealed.
The outer diameter of the centralizer 1 is smaller than the inner diameter of the oil pipe, so that wax and scale on the inner wall of the oil pipe can be scraped when the rod column is pulled up and down, the motion of the rod column, the downward movement of the rod pump and the smooth passing of a soluble ball are guaranteed.
The rod pump 3 includes: 3-1 parts of a centralizing head, 3-2 parts of a pull rod, 3-3 parts of a pump cylinder, 3-4 parts of a plunger, 3-5 parts of a sealing seat and 3-6 parts of a locking claw. The upper end of the pump barrel 3-3 is provided with a centering head 3-1, the lower end is provided with a sealing seat 3-5, and a locking claw 3-6 is arranged below the sealing seat 3-5; the pull rod 3-2 is connected with the plunger 3-4 and is arranged in the pump cylinder 3-3 together.
The outer diameter of the centralizing head 3-1 is the maximum outer diameter of the rod pump 3, is close to the inner diameter of an oil pipe, and can centralize the pump barrel 3-3 to ensure that the oil pump does not swing during working, the centralizing head 3-1 is provided with flow channels which are circumferentially distributed and can be communicated with the upper part and the lower part of the oil pipe, and the diameter of the flow channels is more than 5 times of the diameter of fracturing sand. The seal mount 3-5 may be seated within the pump barrel 3-3 and form a conical seal.
Example 2
The use method of the multi-round sand washing and liquid draining integrated tubular column in the embodiment 1 comprises the following steps: and after the pipe column is put in, putting the soluble ball into the pipe column to carry out pipe column pressure test, and after the pressure test is qualified, putting the rod pump into the pipe column to discharge liquid. When the pumping rod and the pumping pump are out of the problem or the oil layer is buried, the pumping rod and the rod pump are lifted out to enable the interior of the tubular column to be smooth, the coiled tubing or the continuous oil pipe is used for detecting and flushing sand, the soluble ball is put into the tubular column for pressure test after operation, and the rod pump is put into the tubular column for production after the pressure test is qualified until the oil tubular column is difficult to lift.
The soluble ball can bear the pressure of 30MPa, and the requirement of pipe column pressure test is met.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (8)
1. A multi-round sand washing and liquid discharging integrated pipe column is characterized by comprising a centralizer, a sucker rod, a rod pump and an outer pipe; the centralizer is fixed on the upper part of the sucker rod, and the sucker rod is connected with a rod pump; the sucker rod and the rod pump are arranged in the outer pipe.
2. The integrated pipe string for sand washing and liquid drainage of multiple rounds of operations as claimed in claim 1, wherein the external diameter of the centralizer is smaller than the internal diameter of the oil pipe, so that wax and scale on the inner wall of the oil pipe can be scraped when the rod string is pulled down, and the movement of the rod string, the downward movement of the rod pump and the passing of a soluble ball are ensured to be smooth.
3. The integrated pipe string for multiple sand washing and drainage operations of claim 1, further comprising a soluble ball disposed at the bottom end of the rod pump.
4. The integrated pipe string for multiple sand washing and drainage cycles of claim 1, wherein the soluble ball is disposed between the lower end of the rod pump and the oil pipe, and the space between the lower end of the rod pump and the oil pipe can be sealed.
5. The integrated pipe string for multiple sand washing and liquid drainage according to claim 1, wherein the rod pump comprises a centering head, a pull rod, a pump barrel, a plunger, a sealing seat and a locking claw;
the upper end of the pump barrel is provided with a centering head, the lower end of the pump barrel is provided with a sealing seat, and a locking claw is arranged below the sealing seat; the pull rod is connected with the plunger piston and is arranged in the pump cylinder together.
6. The integrated pipe column for sand washing and liquid drainage for multiple rounds of operations as claimed in claim 5, wherein the outer diameter of the centering head is the maximum outer diameter of the rod pump, so that the pump barrel can be centered to ensure that the oil well pump does not swing during operation.
7. The integrated pipe string for multiple sand washing and liquid draining according to claim 5, wherein the centralizing head is provided with flow channels which are circumferentially distributed and can be communicated with the upper part and the lower part of the oil pipe, and the diameter of each flow channel is more than 5 times of the diameter of fracturing sand.
8. The integrated tubing string of claim 5, wherein the sealing seat is adapted to seat within the pump barrel and form a conical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598632.4A CN114687706A (en) | 2020-12-29 | 2020-12-29 | Many rounds of sand washing flowing back integration tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598632.4A CN114687706A (en) | 2020-12-29 | 2020-12-29 | Many rounds of sand washing flowing back integration tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114687706A true CN114687706A (en) | 2022-07-01 |
Family
ID=82133301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011598632.4A Pending CN114687706A (en) | 2020-12-29 | 2020-12-29 | Many rounds of sand washing flowing back integration tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114687706A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670626Y (en) * | 2003-12-31 | 2005-01-12 | 中原石油勘探局机械制造总厂 | Rod oil-sucking pumps |
| CN201269188Y (en) * | 2008-08-28 | 2009-07-08 | 徐正国 | Novel sand prevention rod type oil pump |
| CN206707678U (en) * | 2017-03-30 | 2017-12-05 | 中国石化江汉油田分公司江汉采油厂 | One kind is used for sand well sand washing and turns to take out integrated pipe column |
| RU2679406C1 (en) * | 2018-04-19 | 2019-02-08 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" | Method of controlled pumping down to formations and device for its implementation |
| CN111075394A (en) * | 2019-11-22 | 2020-04-28 | 中国石油天然气股份有限公司 | Controllable dissolving mechanism of downhole tool and use method thereof |
| CN211230419U (en) * | 2019-09-10 | 2020-08-11 | 中国石油化工股份有限公司 | Coal bed gas well fracturing flowing back integration tubular column |
-
2020
- 2020-12-29 CN CN202011598632.4A patent/CN114687706A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670626Y (en) * | 2003-12-31 | 2005-01-12 | 中原石油勘探局机械制造总厂 | Rod oil-sucking pumps |
| CN201269188Y (en) * | 2008-08-28 | 2009-07-08 | 徐正国 | Novel sand prevention rod type oil pump |
| CN206707678U (en) * | 2017-03-30 | 2017-12-05 | 中国石化江汉油田分公司江汉采油厂 | One kind is used for sand well sand washing and turns to take out integrated pipe column |
| RU2679406C1 (en) * | 2018-04-19 | 2019-02-08 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" | Method of controlled pumping down to formations and device for its implementation |
| CN211230419U (en) * | 2019-09-10 | 2020-08-11 | 中国石油化工股份有限公司 | Coal bed gas well fracturing flowing back integration tubular column |
| CN111075394A (en) * | 2019-11-22 | 2020-04-28 | 中国石油天然气股份有限公司 | Controllable dissolving mechanism of downhole tool and use method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 吴则中等: "《有杆抽油设备与技术 抽油杆[M] 》", 31 December 1994, 石油工业出版社, pages: 470 * |
| 尹强;刘辉;喻成刚;邓友超;李奎;江源;: "可溶材料在井下工具中的应用现状与发展前景", 钻采工艺, no. 05, 25 September 2018 (2018-09-25), pages 2 * |
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