Full-reservoir sampling tester for oil and gas well

A technology for testers and oil and gas wells, applied in the direction of sampling devices, etc., can solve the problems of poor passability and achieve the effect of increasing volume and strong adaptability

Pending Publication Date: 2022-05-13
XIAN JINGSHIXIN GASOLINEEUM TECH DEVCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after the oil well has been used for a period of time, blockages will appear in the oil well, which is often caused by loose rock formations. The existing sampling equipment usually cannot pass through the blockage area well, and the passability is not good. Therefore, the main problem to be solved by the present invention is, Improves sampler throughput and provides a one-shot operation that can sample the entire reservoir at different depths

Method used

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  • Full-reservoir sampling tester for oil and gas well
  • Full-reservoir sampling tester for oil and gas well
  • Full-reservoir sampling tester for oil and gas well

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Embodiment Construction

[0023] Combine below Figure 1-5 The present invention is described in detail, wherein, for the convenience of description, the orientations mentioned below are defined as follows: figure 1 The up, down, left, right, front and back directions of the projection relationship itself are the same.

[0024] combined with Figure 1-5 A kind of oil and gas well full reservoir sampling tester includes a sampling tube 10, the sampling tube 10 is provided with a sampling cavity 11, and at least two groups of sampling pistons 12 are slidingly provided in the sampling cavity 11, adjacent sampling pistons 12 There is a lifting line 36 between them, the lower end of the sampling tube 10 is provided with a pointed installation part 26, the lower end of the pointed installation part 26 is provided with a pointed part 22, and the pointed installation part 26 is provided with an impact chute 19, and the inside of the impact chute 19 Sliding is provided with impact block 20, and sampling cavit...

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Abstract

The invention relates to the related technical field of oil and gas well sampling, and discloses an oil and gas well full reservoir sampling tester which comprises a sampling pipe, the sampling pipe is made of an elastic material, a sampling cavity is formed in the sampling pipe, at least two sets of sampling pistons are arranged in the sampling cavity in a sliding mode, and lifting lines are arranged between the adjacent sampling pistons. The lower end of the sampling pipe is provided with a pointed-end mounting part, the lower end of the pointed-end mounting part is provided with a pointed-end part, the device is placed in an oil well by arranging the pointed-end part, the sampling pipe, the sampling cavity, the sampling piston, the lifting line, the sampling port and the like, the lifting line sequentially drives the sampling piston to move upwards from top to bottom, and the sampling piston moves upwards along with the increase of the depth of the device in the well. Oil gas with different depths is supplemented into gaps between the adjacent sampling pistons through the sampling ports, so that the function of sampling according to the depths is realized.

Description

technical field [0001] The invention relates to the related technical field of oil and gas well sampling, in particular to an oil and gas well full reservoir sampling tester. Background technique [0002] With the continuous deepening of petroleum development and the increase of water injection workload, great changes have taken place in each oil layer produced downhole: formation pressure deficit; formation water content changes; formation productivity changes; the total production and water content of a single well have changed, etc. The cased hole formation test sampler is designed to solve the above problems, and it is an instrument for measuring and sampling the pressure of a single layer and grasping the dynamic changes of the single layer in time. At present, there are two formation testing techniques, one is the oil rod formation test, and the other is the cable formation test. The construction period of the oil rod formation test is long, the labor intensity is hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N1/24G01N1/08
CPCG01N1/14G01N1/24G01N1/08
Inventor 马泳
Owner XIAN JINGSHIXIN GASOLINEEUM TECH DEVCO
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