A three-layer oil testing pipe string and oil testing method
A technology for oil testing strings and oil pipes, which is applied in earthwork drilling, wellbore/well components, measurement, etc. It can solve the problems of cumbersome operation and long oil well testing period, and achieve accuracy, short oil testing period and high efficiency. high effect
Active Publication Date: 2021-04-30
PETROCHINA CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] When testing each oil test layer, the pipe string needs to be pulled down. After the oil test is completed, the bridge plug or ash plug needs to be lowered to isolate the test oil layer from the upper test oil layer. The oil test cycle is long
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
[0071] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0072] In the first aspect, the embodiment of the present invention provides a three-layer oil testing string, as shown in the attached figure 1 As shown, the three-layer oil testing string includes: the first oil pipe 1a, the first circulation valve 2a, the first perforation assembly 3a, the first pressure control switch 4a, and the first oil pipe nipple 5a connected sequentially from top to bottom , the first screen 6a, the second perforation assembly 3b, the second screen 6b, the second tubing nipple 5b, the second pressure control switch 4b, the third perforation assembly 3c; the first pressure control switch 4a is used to open Or close the channel between the first perforating assembly 3a and the first screen 6a, between the oil t...
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 discloses a three-layer oil testing pipe string and an oil testing method, belonging to the technical field of oil and gas exploitation. The three-layer oil testing string includes: the first oil pipe connected in sequence from top to bottom, the first circulation valve, the first perforation assembly, the first pressure control switch, the first oil pipe nipple, the first screen pipe, the first The second perforation assembly, the second screen pipe, the second tubing nipple, the second pressure control switch, and the third perforation assembly; the first pressure control switch is used to open or close the first perforation assembly and the first screen pipe, test The passage between the tubing string and the casing; the second pressure control switch is used to open or close the passage between the second screen and the third perforation assembly, the tubing string and the casing; the first tubing nipple, the second A first packer and a second packer are installed on the outer wall of the tubing nipple to seal the annulus between the three-layer oil testing string and the casing into an upper annulus, a middle annulus and a lower annulus. The three-layer oil testing pipe string provided by the present invention can perform oil testing on the three layers of oil testing layers after the next pipe string is lifted, and the oil testing period is relatively short.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a three-layer oil testing string and an oil testing method. Background technique [0002] In the production process of oil wells in oil fields, due to mutual interference between test oil layers of different fluid production types and different pressure systems, each oil test oil layer contributes differently to the overall fluid production capacity. The production capacity, fluidity and pressure recovery curves of each test oil layer are used to guide the formulation of oil and gas production plans. [0003] At present, layer-by-layer oil testing is usually adopted, and the sealing layer is returned to layer-by-layer oil testing, that is, each time a test oil layer is tested, the pipe string is first lowered to test the oil test layer below the oil well, and then the bridge plug is lowered. Or the ash plug will seal the oil test layer and the oil test layer abo...
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 Patents(China)
IPC IPC(8): E21B43/00E21B43/11E21B47/00
CPCE21B43/00E21B43/11E21B47/00
Inventor 郭秀庭李东平翁博李万强刘洋强华任世举宁坤刘福鹏张晓春
Owner PETROCHINA CO LTD