Complex fault block oil reservoir vertical well deviated space homing prediction method

Abstract

The invention provides a complex fault block oil reservoir vertical well deviated space homing prediction method comprising the following steps: S1, through fine stratigraphic correlation, reasonably dividing and comparing oil-containing small layers, and reasonably judging the oil-water relationship; S2, performing fine structure interpretation, compiling a top structure map and a fracture system development map, and judging whether there is well deviation in a place with abnormal fault form and structure trend; S3, compiling geological research maps based on the stratigraphic correlation result data and the seismic interpretation result; and S4, putting forward a reasonable vertical well deviated space homing prediction method according to a found drilled vertical well deviation problem. The complex fault block oil reservoir vertical well deviated space homing prediction method is clear in technical idea and simple in application, provides more detailed drilling data for 3D geological modeling, and lays a solid geological foundation for the development of later residual oil distribution research.

Description

technical field [0001] The invention relates to the geological research field of fault-block oil reservoir development, in particular to a method for predicting the space homing of vertical well deviation in complex fault-block oil reservoirs. Background technique [0002] In complex fault-block geological research, we are used to thinking that vertical wells have no or very small well deviations, and the influence of vertical well deviations on geological work is often not considered or ignored. But in fact, due to the development of faults in complex fault-block reservoirs, large changes in formation dip angles, and large differences in formation lithology, vertical well deviations are common, which more or less plays a role in structural and geological research. There are a large number of vertical wells in complex fault-block oilfields, and there are different degrees of vertical well deviation. According to preliminary statistics, the horizontal displacement of the smal...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a solution to the problem of vertical well inclination data in complex fault-block reservoirs with large errors or no gyro inclination data, to provide more reasonable and reliable drilling data for fine geological research, and to effectively improve the density in the later stage of development. Spatial Homing Prediction Method of Vertical Well Deviation in Complex Fault-block Reservoirs with Accuracy of Fine Geology and Seismic Research under Well Pattern Conditions

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