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Enhanced formation testing double packer

A formation testing, double packer technology, applied in the directions of sealing/packing, measurement, wellbore/well components, etc. Improve practicability, reduce transportation and use costs, facilitate disassembly and separate transportation

Inactive Publication Date: 2021-06-01
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of double packers is inconvenient and difficult to transport, which poses certain restrictions on the use of double packers

Method used

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  • Enhanced formation testing double packer
  • Enhanced formation testing double packer
  • Enhanced formation testing double packer

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0020] The existing double packer is an integral structure, which cannot be disassembled for separate transportation. In the case of a long overall length of the double packer, the transportation cost is greatly increased, which is not conducive to the maintenance, transportation and maintenance of the double packer. operation, and it is also easy to cause damage to the double packers. Moreover, the span between the upper packer and the lower packer in the double packer is fixed, and the scope of application is small, so it cannot be widely used in downhole operations under different well c...

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Abstract

The invention provides an enhanced formation testing double packer. The enhanced formation testing double packer comprises an upper packer submodule and a lower packer submodule; the upper packer submodule comprises an upper packer upper connecting part, an upper packer assembly body and an upper packer lower connecting part which are connected in sequence; the lower packer submodule comprises a lower packer upper connecting part, a lower packer assembly body and a lower packer lower connecting part which are connected in sequence; and the upper packer lower connecting part is detachably connected with the lower packer upper connecting part through a connecting piece. The enhanced formation testing double packer can be quickly disassembled and assembled, is convenient to independently transport, and is wide in application range.

Description

technical field [0001] This application relates to but not limited to formation testing technology, especially an enhanced formation testing double packer. Background technique [0002] Formation testing technology is a logging technology that can directly, quickly and accurately judge the properties of formation fluids, obtain formation pressure data and undisturbed formation fluids. It plays an important role and provides a reliable basis for correctly understanding reservoir characteristics and fluid types. With the increasing difficulty of oil and gas exploration, there are more and more complex reservoirs with low porosity, low permeability, heavy oil and sand production, and the limitations of the application of conventional setting probe nipples of formation testers in these reservoirs are gradually revealed. , the probe cannot pass the setting seal to isolate the formation, or when the tester is pumping, the probe area is too small, so that the tester cannot reach a...

Claims

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Application Information

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IPC IPC(8): E21B33/122E21B33/127E21B47/06E21B34/08
CPCE21B33/122E21B33/127E21B47/06E21B34/08
Inventor 秦小飞卢涛陈永超薛永增陈鸣张国强张小康马俊全
Owner CHINA NAT OFFSHORE OIL CORP
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