一种水平井无管柱压裂井底温压测试装置
By designing a tubingless fracturing well bottom temperature and pressure testing device, which utilizes gravity and liquid to propel the tool in and out, the problems of complexity, high cost, and high risk in existing well bottom temperature and pressure testing technologies have been solved, achieving safe, fast, and low-cost well bottom temperature and pressure testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI YANCHANG PETROLEUM GRP
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-17
AI Technical Summary
The existing technology for setting up bottom-hole temperature and pressure testing instruments involves complex procedures, high costs, long cycles, and high risks. It also requires disassembling the high-pressure wellhead, making the construction complex and time-consuming.
A tubing-free fracturing bottom-hole temperature and pressure testing device for horizontal wells is designed, comprising interconnected retrieval and testing tools. The device utilizes gravity and fluid propulsion to lower and retrieve the tools, avoiding tubing insertion and wellhead disassembly. A temperature and pressure testing module and a shock absorption device are used to protect the instruments, simplifying the construction procedure.
It enables safe, fast, and low-cost bottom hole temperature and pressure testing, simplifies the construction process, reduces the operational risks of existing technologies, and saves time and money.
Smart Images
Figure CN224515174U_ABST
Abstract
Claims
1. A horizontal well pipestring-free fracturing well bottom temperature pressure testing device, characterized in that, The utility model provides a fishing tool and test tool, the fishing tool and test tool are connected with each other, the test tool includes connecting end and test end, connecting end is connected with fishing tool, and the outer wall of test end is equipped with sieve hole (14), and the inside is equipped with temperature and pressure test module, the fishing tool includes cable connector (1), upper counterweight ring (2), lower counterweight ring (4) and fishing head (9) connected in sequence, and fishing head (9) is connected with connecting end.
2. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device according to claim 1, characterized in that, The lower counterweight ring (4) is internally provided with a recovery channel (6), and further comprises a pair of connecting tongues (8); the connecting tongues (8) are symmetrically arranged on the side wall of the lower counterweight ring (4), and each of the connecting tongues (8) located on the opposite side in the lower counterweight ring (4) is connected with a spring (7), and the two springs (7) are connected by a connecting rope (5) with the center of the connecting rope (5) located directly below the recovery channel (6).
3. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device according to claim 2, characterized in that, The top end of the connecting end is sequentially provided from top to bottom with a fishing channel (10) and a fishing mouth (13), the inner side wall of the fishing channel (10) is provided with a connecting tongue fixing groove (12), and the fishing mouth (13) is matched with the fishing head (9).
4. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device according to claim 3, characterized in that, The outer side wall of the fishing channel (10) is provided with a rubber ring (11).
5. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device of claim 1, wherein, The temperature and pressure test module comprises a temperature and pressure gauge (17), the top end of the temperature and pressure gauge (17) is connected to the bottom of the connecting end by a damping spring (18), and the bottom end is connected to the bottom of the test end by a damping spring (18).
6. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device according to claim 5, characterized in that, The side wall of the temperature and pressure gauge (17) is annularly provided with a fixing ring (16), and the fixing ring (16) is fixed to the inner side wall of the test end by a pull rope (15).
7. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device of claim 6, wherein, The bottom of the test end is further connected with a bumping and damping head (19), and the bottom end of the temperature and pressure gauge (17) is connected to the top of the bumping and damping head (19) by a damping spring (18).
8. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device of claim 1, wherein, The side wall of the upper counterweight ring (2) is provided with a centralizer (3).
9. The horizontal well pipestring-free fracturing well bottom temperature and pressure testing device of claim 1, wherein, The upper counterweight ring (2) and the lower counterweight ring (4) are connected by threads.