Intelligent electric formation tester

Abstract

The invention discloses an intelligent electric formation tester. The intelligent electric formation tester comprises an outer cylinder assembly, a pressure transmission assembly, a control assembly and a sampling assembly, wherein the outer cylinder assembly comprises an upper joint, a driving outer cylinder, a sampling outer cylinder and a lower joint which are in threaded connection in sequencefrom top to bottom; the pressure transmission assembly is arranged in the upper joint and comprises a pressure transmission hole, an outer sensor and an inner sensor; the control assembly is arrangedin the driving outer cylinder and comprises a motor battery pack sheath, a battery pack, a driving controller and a motor transmission screw; and the sampling assembly is arranged in the sampling outer cylinder and the lower joint and comprises a valve connecting rod and a valve connecting rod base. The intelligent electric formation tester provided by the invention is small in size, simple in structure, low in energy consumption and stable in performance, and has a high automation degree, manual operation errors are reduced, the size is reduced, and the application range is expanded.

Description

technical field [0001] The invention relates to an oil and gas field testing technology, in particular to an intelligent electric formation tester used for casing well completion testing and drilling midway testing. Background technique [0002] At present, the commonly used formation testing tools are divided into two types: lifting and lowering string control and annular pressure control according to the operation mode of opening and closing the well. Mainly there are the following problems: (1) It cannot cooperate well with the pump screw pump and jet pump drainage and oil testing technology. (2) On-site operators must have high technical ability, and there are many human errors and low test success rate. (3) The structure of the tool is complicated, the maintenance is time-consuming and laborious, and the cost is high. (3) The tools are heavy and long, the construction is labor-intensive, and the transportation is difficult. In order to solve the above problems, it is...

AI Technical Summary

Problems solved by technology

There are mainly the following problems: (1) It cannot be well coordinated with the pump screw pump and jet pump drainage and oil testing technology

(2) On-site operators must have high technical ability, there are many human errors in operation, and the test success rate is low

(3) The tool structure is complex, maintenance is time-consuming and labor-intensive, and the cost is high

(3) The tools are heavy and long, the construction is labor-intensive, and the transportation is difficult, etc.

The tool is complex in structure, high in machining accuracy, high in mechatronics integration, and high in service costs

ZL201110185172.7 and ZL201510675122.5 respectively disclose two kinds of intelligent test valves, but due to the high energy consumption in the process of opening and closing the well, the number of operations for opening and closing the well is limited

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