A Study of Heat Flow Analysis Techniques and Their Relationship to the Development of Pore Pressure

Abstract

Undercompaction caused by high sedimentation rate in Malay Basin is the most common overpressure mechanism, and temperature distribution has no relationship with the occurrence of overpressure. Similarly, the occurrence of overpressure is independent of any particular formation group. There are many factors for the generation of overpressure in the Malay Basin, and temperature also plays an important role in the generation of overpressure. This paper introduces heat flow analysis technology and its relationship with pore pressure development. On the basis of structural interpretation, the study area is composed of four well-defined fault blocks. The problem of shallow pore pressure is very common in Malay basin because of high geothermal gradient. Pore fluid pressure is the pressure exerted by the fluid in the confined pore space of the rock, and hydrostatic pressure is the pressure exerted by a column of water at any given depth. A one-dimensional modeling of the basin was performed using temperature data from drilling rod tests (DSTs), modular formation dynamics tests (MDTS), repeated formation tests (RFTS), and production tests to evaluate terrestrial heat flow for all fault blocks. The heat flow values of each well in the fault block are different, but the heat flow values of each fault block have little change. The pressure data of all Wells from the well test were plotted and the results of heat flow analysis were verified. It is speculated that the high temperature and high heat flow in each fault block are the main causes of hypersonic pressure.