Novel sucker-rod pump and coiled tubing continuous conversion operation device
A kind of operating device and coiled tubing technology, which is applied in the direction of wellbore/well valve device, pump with flexible working elements, etc., can solve the problems of stratum damage, production decline, affecting the continuous production of coalbed methane wells, etc., to avoid Damage, increase efficiency, increase the effect of stable production time
Pending Publication Date: 2020-02-07
CNOOC ENERGY TECH & SERVICES
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, when the two operations are switched, it is necessary to stop the drainage and replace the pipe string, which will cause damage to the formation and decrease in production, which will seriously affect the continuous production of coalbed methane wells.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0019] like Figure 1 to Figure 7 As shown in the figure, a new type of device for continuous conversion between rod pump and coiled tubing includes coiled tubing 6, oil well pump 9, and casing 8 outside coiled tubing 6. The oil well pump 9 is connected, and the oil pipe collar 4 is set with a floating valve cover 3; the floating valve cover 3 is divided into a wide-mouthed pipe part and a thin-mouthed pipe part, and the top of the wide-mouthed pipe part is circumferentially A drain port 33 is provided, and the through hole on the bottom pipe wall of the wide-mouthed pipe part is blocked by a floating ball valve 32, and a continuous pipe joint 2 that is threadedly matched with the inner wall of the narrow-mouth pipe part is arranged in the narrow-mouth pipe part; the continuous pipe joint 2. The continuous pipe collar 1 is connected with the coiled pipe 5...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a novel sucker-rod pump and coiled tubing continuous conversion operation device which comprises a coiled tubing, an oil well pump and a casing outside the coiled tubing. Thecoiled tubing is in communication to the oil well pump in a gas well through a tubing coupling, and a swimming valve cover is sleeved with the tubing coupling; the swimming valve cover is divided intoa wide-mouth pipe portion and a narrow-mouth pipe portion, a drainage opening is formed in the circumferential direction of the top end of the wide-mouth pipe portion, a through hole in a bottom tubewall of the wide-mouth pipe portion is plugged by a swimming ball valve, and a coiled tubing joint in threaded fit with the inner wall of the narrow-mouth pipe portion is arranged in the narrow-mouthpipe portion; the coiled tubing joint communicates with the coiled tubing through a coiled tubing coupling, and the side wall of the bottom of the coiled tubing joint is provided with side opening holes; and the coiled tubing coupling and the swimming valve cover are in sealed connection through a sealing ring. The continuous conversion device for sucker-rod pump drainage and coiled tubing drainage operation is provided, damage of well shutdown to a stratum is avoided, the time for stable production is prolonged, and the drainage efficiency of coalbed gas wells is improved.
Description
technical field [0001] The invention relates to the technical field of gas production equipment, in particular to a novel device for continuously converting rod pumps and coiled tubing. Background technique [0002] At present, the production of coalbed methane wells in my country has a large amount of water in the early stage, and gas production can only be produced after a period of drainage. This process generally requires the use of rod pumps to drain water and reduce pressure. After entering the stable production stage, the bottomhole pressure of coalbed methane generally cannot meet the production requirements of using tubing or pipe-casing annulus to carry water, so the production mode of rod pump drainage and oil-casing annulus gas production is generally adopted. However, for high-yield gas wells, due to their high gas production and small water production, the water entering the wellbore can be carried to the wellhead by increasing the airflow velocity for gas-carr...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B17/02E21B17/042E21B34/00F04B47/00
CPCE21B17/02E21B17/0426E21B34/00E21B43/00F04B47/00
Inventor 韦涛江涛董广河范旭赵有龙林建伟吴枢繁夏凯旋韩宇孙冰
Owner CNOOC ENERGY TECH & SERVICES