Tight oil and gas reservoir pressure test process matched device and using method

Abstract

The invention discloses a tight oil and gas reservoir pressure test process matched device and a using method. The tight oil and gas reservoir pressure test process matched device comprises a large flow pump, a small flow pump and a controlling and recording system used for controlling start, stop and the output flow of the large flow pump and the small flow pump; a liquid storing tank is further included; input manifolds of the large flow pump and the small flow pump of the liquid storing tank are communicated with an output manifold of the liquid storing tank; output manifolds of the large flow pump and the small flow pump are each provided with a check valve; the output manifold of the liquid storing tank is further provided with an overflow valve and a second electronic pressure meter used for monitoring pressure of liquid in the manifold; one-way oil and water flow-based detection is achieved; in the process of pressure testing before testing of a blowout preventing device and other auxiliary devices and in the process of testing, injected fluid is automatically controlled, and an output one-way fluid device is stabilized.

Description

technical field [0001] The invention belongs to the technical field of pressure testing of oil and gas reservoirs, and in particular relates to a matching device for pressure testing of tight oil and gas reservoirs and a use method. Background technique [0002] In the process of oilfield dynamic monitoring, whether it is an oil well or a water well, flow monitoring is very important. After a period of use of flow testing instruments or after maintenance of important components such as sensors, it is necessary to check the accuracy of the measurement. The instrument is sent out for inspection, and the period It is long and inconvenient to operate. Before the test construction, the blowout prevention equipment needs to be tested under pressure to ensure the safety of the construction. In addition, in some test items, the pressure tightness of the blowout prevention equipment must be inspected in advance to ensure reliable data. Some test items are tested during the test proces...

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Problems solved by technology

[0002] In the process of oilfield dynamic monitoring, whether it is an oil well or a water well, flow monitoring is very important. After a period of use of flow testing instruments or after maintenance of important components such as sensors, it is necessary to check the accuracy of the measurement. The instrument is sent out for inspection, and the period It is long and inconvenient to operate. Before the test construction, the blowout prevention equipment needs to be tested under pressure to ensure the safety of the construction. In addition, in some test items, the pressure tightness of the blowout prevention equipment must be inspected in advance to ensure reliable data. Some test items are tested during the test process. In combination with the requirements of the testing process, it is necessary to stably and continuously inject fluid into the well, such as the injection pressure drop test of coalbed methane. The current commonly used equipment is to manually adjust the flow control valve at any time to ensure the stability of the injection flow. The data of each major node in the construction are all Relying on manual records, the introduction of a large number of human errors has greatly affected the test results

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