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Perforating-combined testing and sampling integrated device

A technology of joint operation and sampling tube, applied in the directions of measurement, production of fluid, wellbore/well components, etc., can solve the problems of complex core tool structure, small fluctuation of formation pressure, complex construction technology, etc., and achieve reliable well test interpretation results, The effect of large pressure fluctuation range and simple construction process

Active Publication Date: 2018-06-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The above formation testers have been widely used at present, but their defects are very obvious: 1. The core tool structure is complex and difficult to maintain; 2. There are many related tools, the pipe string is complicated, and it is prone to failure in the downhole; 3. The construction process is complicated. High quality and experience requirements for construction personnel; 4. The core tools need to be imported, and the technology is controlled by others; 5. The sampling volume of high-pressure physical properties is small, no more than 2000ml, resulting in small formation pressure fluctuations and short detection pressure radius; 6. High cost

Method used

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Embodiment Construction

[0029] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0030] like figure 2 as shown, figure 2 It is a structural diagram of a device integrated with perforation testing and sampling of the present invention. The integrated device for testing and sampling combined with perforation is composed of a pressure thermometer support cylinder 1 , a vacuum sampling cylinder 2 , a pressure control switch 3 and a packer 4 .

[0031] like image 3 As shown, the pressure thermometer support cylinder 1 is a hollow thick-walled metal cylinder, and the side wall is symmetrically opened with a pressure thermometer slot. The pressure change in the liquid stage and the pressure recovery in the later stage. It is connected to the vacuum sampling cylinder through the joint hoop. In one embodiment, the upper joint is con...

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Abstract

The invention provides a perforating-combined testing and sampling integrated device. The perforating-combined testing and sampling integrated device comprises a vacuum sampling tube, a pressure control switch and a packer; the perforating-combined testing and sampling integrated device are set in the predetermined position in a well through the packer, and a perforating gun is located at the lower end of the packer; the pressure control switch is located at the lower end of the perforating gun, when the perforating gun conducts perforating, fluids are generated from a stratum, and the pressure rises, the pressure control switch is triggered by the pressure, and a fluid inlet hole in the pressure control switch is opened, the fluids enter the vacuum sampling tube so as to conduct a stratumtest in the vacuum sampling tube; and the upper end of the vacuum sampling tube is connected with the pressure control switch through a section hoop, is a fluid sampling device and is vacuumized in advance. According to the perforating-combined testing and sampling integrated device, perforating, testing and high-pressure physical property sampling can be integrated, and an open hole / well completion stratum test which is complex in process at present can be replaced completely.

Description

technical field [0001] The invention relates to the technical field of stratum testing, in particular to an integrated device for testing and sampling combined with perforation. Background technique [0002] Formation testing technology is a method to finally determine the properties of oil and gas reservoirs. It is not only fast and economical, but also can directly record the parameters of oil and gas reservoirs under production status from a dynamic perspective. It can discover and correctly evaluate oil and gas reservoirs in time and serve the whole process of oil and gas exploration and development. The construction process is to lower the test tool into the test interval through the tubing, and use the ground operation to seal the packer, isolate the mud / perforation fluid and other intervals from the test layer, and then control the ground to open the downhole test The valve allows the formation fluid in the test interval to flow into the pipe string through the scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B49/08E21B47/06E21B47/07E21B43/116
CPCE21B43/116E21B47/06E21B49/00E21B49/081E21B49/088E21B47/07
Inventor 陈培胜王昊宋李煜郑彬涛陈凯冯绍云陈磊王华卢娜娜隋文
Owner CHINA PETROLEUM & CHEM CORP
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