Offshore oil and gas well test pipe column and ground flow decision system

Abstract

The invention relates to the oil field production technology field and especially relates to an offshore oil and gas well test pipe column and ground flow decision system. The system comprises a data layer, an application service layer and a knowledge base layer. The data layer is quoted from external data, various kinds of databases are established and a support is provided for output of the application service layer. The application service layer comprises a pre-decision of a test pipe column and a ground flow, flow simulation of the test pipe column and the ground flow, flow guarantee of the test pipe column and the ground flow and real-time analysis. The knowledge base layer carries out automatic correction on a correlation parameter in a simulation model and guides the flow simulation of the test pipe column and the ground flow and a flow guarantee analysis. The decision system can realize an individual decision of the test pipe column and the ground flow and can realize highly decision fusion and an integration decision of the test pipe column and the ground flow so that a test pipe column and ground flow design is scientific and reasonable and safety guarantee is provided for test work.

Description

technical field [0001] The invention relates to the technical field of oil field production, in particular to an offshore oil and gas well test pipe string and a surface process decision-making system. Background technique [0002] Oil and gas well testing is an important part of oil and gas exploration and development. It aims to obtain dynamic data such as pressure and temperature of oil and gas layers through testing strings and surface processes, and to obtain various data such as fluid viscosity and components, so as to understand the characteristics of oil and gas layers. Production capacity, oil recovery index and other data provide reliable basis for oil and gas field development. Before drilling, the Geology and Reservoir Department formulated a test plan based on limited data, and the design of the test string and surface process was to meet the requirements of the test plan and obtain accurate formation data. [0003] Accurate formation parameters and test plan a...

AI Technical Summary

Problems solved by technology

Due to the long preparation time for offshore operations, it is difficult to temporarily adjust test strings, tools and surface procedures, which will bring great risks to offshore oil and gas well testing operations

Existing test strings and surface processes are basically determined by experience. During the determination process, there is no decision-making system for flow simulation and quantitative analysis of flow assurance for the strings and surface processes, and there is no interaction with reservoir decision-making, which makes the test operation safe. The risk increases, and in serious cases, the test string and the surface process cannot meet the test plan formulated by the reservoir, resulting in test failure

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