CN108999600A - A kind of CO2Compound throughput technique - Google Patents
A kind of CO2Compound throughput technique Download PDFInfo
- Publication number
- CN108999600A CN108999600A CN201810958416.2A CN201810958416A CN108999600A CN 108999600 A CN108999600 A CN 108999600A CN 201810958416 A CN201810958416 A CN 201810958416A CN 108999600 A CN108999600 A CN 108999600A
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- China
- Prior art keywords
- tubing
- screw pump
- metal
- ground
- box cupling
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- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of CO2Compound throughput technique belongs to oil extraction in oil field technology field.The present invention includes installation pit shaft part and installation ground blowout prevention part, pit shaft part is made of oil pipe, hollow stem, metal screw pump, ground blowout prevention part is made of driving unit on screw pump, blowout preventer for sucker rod, production wellhead, and the present invention can guarantee wellhead sealing by the technique, injects CO2After can not operation directly resume production.
Description
Technical field
The present invention relates to oil extraction in oil field technology fields, and in particular to a kind of CO2Compound throughput technique.
Background technique
In North Jiangsu Oilfield development process, part reservoir reserve can not be employed and high water-cut reservoir is continuously increased, for
CO has been carried out in such oil reservoir implementation2Compound throughput technology application, with CO2Compound throughput technology is constantly promoted, which exists
Screw bolt well has carried out test application, since traditional screw pump stator is made in steel bushing using butyronitrile rubber note lining, rubber
Partially due to CO2Gas cut effect, cause rubber different degrees of damage occur, or even be detached from, cause screw pump normal
Work is resumed production to guarantee that production can only change pump by pump detection and workover.To considerably increase the workload of producers, drop
Low working efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of CO for avoiding dynamic tubing string from changing pump production2Compound throughput technique.
The technical scheme is that a kind of CO2Compound throughput technique, includes the following steps:
(1) pit shaft part is installed:
According to design tubular column structure, successively tripping in silk plug, Φ 73mm heavy wall tubing, sand control screen, ball seat, Φ 73mm thicken
Oil pipe, tubing anchor, Φ 88.9mm heavy wall tubing to well head, tripping in hollow rod, polished rod, underground metal screw pump, are adjusted
Dead space；
(2) blowout prevention part in ground is installed:
Blowout preventer for sucker rod and screw pump drive head are installed；
(3) pressure detecting:
CO is connected at Christmas tree casing gate2Pipeline is injected on ground, to injection pipeline pressure testing 20MPa, if 30min pressure is not
Drop is then qualification；
(4) reservoir exploitation:
Production gate and sucker rod blow-out preventer at wellhead are closed, according to design casing injection chemical agent and CO2, close casing
Gate boils in a covered pot over a slow fire well, and well shut-in period observes and records casing pressure situation of change, stablizes to pressure, and connection ground relief pipeline is to burning tank, oil
Mouth controls open flow, records open flow tolerance, and oil, casing pressure situation of change after open flow, restore machine pumping and produce.
Further technical solution, the underground metal screw pump in step (1) include upper connecting tube, upper box cupling, metal stator,
Metallic rotator, outer tube, lower linking tube, lower box cupling, tubing coupling, limiter, upper connecting tube are connected to metal stator by upper box cupling
End；Lower linking tube is connected to the end of metal stator by lower box cupling；Metallic rotator clearance fit is mounted on the metal stator
Inside；It is inlayed on the outer wall of metal stator and is provided with outer tube, the both ends of outer tube are respectively equipped with tubing coupling, limiter, oil pipe
The outer sheath of box cupling is equipped with pump barrel centralizer.
Further technical solution, the ground blowout prevention part in step (2) include sequentially connected producing well from the bottom up
Mouth, blowout preventer for sucker rod, screw pump drive head.
Beneficial effects of the present invention:
1, extend anti-corrosion property, the wearability, use longevity during CO2 compound throughput of screw pump in the present invention
Life, while operating cost is reduced, the present invention has introduced all-metal screw pump DP technology technology, is filled by acquiring with ground blowout prevention
The cooperation set, solves CO2The drawbacks of compound throughput process screw pump oil production and the problem of tubing string need to be moved；
2, compared with existing screw pump huff and puff oil recovery technique, the invention has the following advantages that
A, CO can be infused with pump2, rate when greatly improving the oil recovery of oil well, while reducing operating cost；
B, the metal screw pump oil extracting device has the characteristics that anti-rotten, wear-resisting, anti-gas cut, can overcome General Purpose Rubber stator
The problem of screw pump gas cut damages guarantees note CO2Safe operation in the process；
C, service life is greatly prolonged, to increase oil production, improves the economic benefit of compound throughput.
Detailed description of the invention
Fig. 1 is ground installation structure chart of the present invention,
Fig. 2 is metal screw pump structure chart in underground of the present invention,
Wherein, 1, screw pump drive head, 2, blowout preventer for sucker rod, 3, production wellhead, 4, tubing coupling, 5, pump barrel righting
Device, 6, upper connecting tube, 7, upper box cupling, 8, outer tube, 9, stator, 10, metallic rotator, 11, lower box cupling, 12, limiter.
Specific embodiment
Below by non-limiting embodiment, the present invention is further explained, understands the present invention.
The present invention is a kind of CO2Compound throughput technique, includes the following steps:
(1) pit shaft part is installed:
According to design tubular column structure, successively tripping in silk plug, Φ 73mm heavy wall tubing, sand control screen, ball seat, Φ 73mm thicken
Oil pipe, tubing anchor, Φ 88.9mm heavy wall tubing to well head, tripping in hollow rod, polished rod, underground metal screw pump, are adjusted
Dead space；
As shown in Fig. 2, underground metal screw pump includes upper connecting tube 6, upper box cupling 7, metal stator 9, metallic rotator 10, outer tube
8, lower linking tube, lower box cupling 11, tubing coupling 4, limiter 12, upper connecting tube 6 are connected to the end of metal stator 9 by upper box cupling 7；
Lower linking tube is connected to the end of metal stator 9 by lower box cupling 11；10 clearance fit of metallic rotator is mounted on the metal stator 9
Inside；It is inlayed on the outer wall of metal stator 9 and is provided with outer tube 8, the both ends of outer tube 8 are respectively equipped with tubing coupling 4, limiter
12, the outer sheath of tubing coupling 4 is equipped with pump barrel centralizer 5；
(2) as shown in Figure 1, installation ground blowout prevention part:
Ground blowout prevention part includes sequentially connected production wellhead 3, blowout preventer for sucker rod 2, screw pump driving from the bottom up
First 1；
(3) pressure detecting:
CO is connected at Christmas tree casing gate2Pipeline is injected on ground, to injection pipeline pressure testing 20MPa, if 30min pressure is not
Drop is then qualification；
(4) reservoir exploitation:
Production gate and sucker rod blow-out preventer at wellhead 2 are closed, according to design casing injection chemical agent and CO2, close set
Pipe closer door boils in a covered pot over a slow fire well, and well shut-in period observes and records casing pressure situation of change, stablizes to pressure, connection ground relief pipeline to burning tank,
Oil nozzle controls open flow, records open flow tolerance, and oil, casing pressure situation of change after open flow, restore machine pumping and produce.
Metal screw pump in the present invention is mainly by metal stator 9, metallic rotator 10, top connection, lower contact, limiter 12
Equal components composition, wherein metal stator 9 and 10 material of metallic rotator be all superior alloy steel through milling with whirling cutter processing and aura from
The machining accuracy of sub- nitriding process surface peening, metal stator 9 and metallic rotator 10 is high, and surface hardness is high, has preferable resistance to
Mill, anticorrosive and anti-gas cut performance.
In practical application, the present invention program is applied to CO2Compound throughput screw bolt well, it is real by tripping in metal screw pump
Now note adopts integrated pipe column, overcomes the drawbacks of classic screw pump recovers the oil, and need to move the problem of tubing string changes pump production, construction letter
Single, success rate is high, reliable performance, and 3 day/mouthful well of activity duration is saved after, and operating cost is 50,000 yuan/mouthful wells.
Claims (3)
1. a kind of CO2Compound throughput technique, which comprises the steps of:
(1) pit shaft part is installed:
According to design tubular column structure successively tripping in silk plug, Φ 73mm heavy wall tubing, sand control screen, ball seat, Φ 73mm heavy wall tubing,
Tubing anchor, Φ 88.9mm heavy wall tubing to well head, tripping in hollow rod, polished rod, underground metal screw pump, adjust erosion control
Away from；
(2) blowout prevention part in ground is installed: installation blowout preventer for sucker rod and screw pump drive head；
(3) pressure detecting:
CO is connected at Christmas tree casing gate2Pipeline is injected on ground, to injection pipeline pressure testing 20MPa, if 30min pressure does not drop
For qualification；
(4) reservoir exploitation:
Production gate and sucker rod blow-out preventer at wellhead are closed, according to design casing injection chemical agent and CO2, close sleeve gate
Stewing well, well shut-in period observe and record casing pressure situation of change, stablize to pressure, and connection ground relief pipeline is to burning tank, oil nozzle control
Open flow processed, records open flow tolerance, and oil, casing pressure situation of change after open flow, restore machine pumping and produce.
2. a kind of CO according to claim 12Compound throughput technique, which is characterized in that the underground metal spiral shell in step (1)
Bar pump includes upper connecting tube, upper box cupling, metal stator, metallic rotator, outer tube, lower linking tube, lower box cupling, tubing coupling, limiter, on
Adapter tube is connected to the end of metal stator by upper box cupling；Lower linking tube is connected to the end of metal stator by lower box cupling；Metal
Rotor clearance is fitted to the inside of the metal stator；It is inlayed on the outer wall of metal stator and is provided with outer tube, the two of outer tube
End is respectively equipped with tubing coupling, limiter, and the outer sheath of tubing coupling is equipped with pump barrel centralizer.
3. a kind of CO according to claim 12Compound throughput technique, which is characterized in that the ground blowout prevention portion in step (2)
Divide including sequentially connected production wellhead, blowout preventer for sucker rod, screw pump drive head from the bottom up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958416.2A CN108999600A (en) | 2018-08-22 | 2018-08-22 | A kind of CO2Compound throughput technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958416.2A CN108999600A (en) | 2018-08-22 | 2018-08-22 | A kind of CO2Compound throughput technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108999600A true CN108999600A (en) | 2018-12-14 |
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ID=64593451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810958416.2A Pending CN108999600A (en) | 2018-08-22 | 2018-08-22 | A kind of CO2Compound throughput technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999600A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611329A (en) * | 2019-02-19 | 2019-04-12 | 盐城世宏石油装备有限公司 | A kind of processing method of rubber rotor screw oil well pump and rubber rotor |
| CN114233620A (en) * | 2021-12-28 | 2022-03-25 | 潍坊宝峰机械有限公司 | Double-motor high-power vertical driving device |
-
2018
- 2018-08-22 CN CN201810958416.2A patent/CN108999600A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611329A (en) * | 2019-02-19 | 2019-04-12 | 盐城世宏石油装备有限公司 | A kind of processing method of rubber rotor screw oil well pump and rubber rotor |
| CN114233620A (en) * | 2021-12-28 | 2022-03-25 | 潍坊宝峰机械有限公司 | Double-motor high-power vertical driving device |
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| 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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210218 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Applicant after: China Petroleum & Chemical Corp. Applicant after: EAST CHINA BRANCH OF SINOPEC Applicant after: TAIZHOU OIL PRODUCTION PLANT, CHINA PETROLEUM & CHEMICAL CORPORATION EAST CHINA OIL & GAS Co. Address before: 225300 South Passage 99, Hailing District, Taizhou City, Jiangsu Province Applicant before: TAIZHOU OIL PRODUCTION PLANT, CHINA PETROLEUM & CHEMICAL CORPORATION EAST CHINA OIL & GAS Co. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |