Super-thick bioclast limestone oil reservoir single well segmentation specific fluid productivity index determination method and device

Abstract

The invention provides a super-thick bioclast limestone oil reservoir single well segmentation specific fluid productivity index determination method and device. The method comprises the steps that (1) the single well fluid productivity index is obtained according to single well testing monitoring data or single well pressure monitoring data; (2) the actual fluid production segmentation and the fluid production capacity of a perforated interval are determined according to the single well fluid production profile measuring result; (3) the fluid production capacity proportion and the fluid production segmentation thickness of a single well fluid production segmentation are determined according to the single well fluid production profile measuring result; (4) the thickness of an effective fluid production segmentation of the single well segmentation is determined according to the single well logging interpretation result; and (5) the specific fluid productivity index of the single well segmentation is determined. The method is completed by sufficiently utilizing single well monitoring data of the oil reservoir development stage, the obtained specific fluid productivity index conformsto the onsite practical situation better and can be applied to comparative study between different regions and different wells, and the study result can better support and determine implementation ofa high-quality reserve stratum and a development adjusting scheme of the same type oil reservoir.

Description

technical field [0001] The invention relates to a method and a device for determining the segmental specific production index of a single well in a huge-thick bioclastic limestone reservoir, and belongs to the technical field of fine description of carbonate reservoirs. Background technique [0002] The focus of fine description research on ultra-thick bioclastic limestone reservoirs is how to rationally produce effective reservoirs and reduce the influence of reservoir heterogeneity factors on oilfield development. The effective production conditions of reservoirs are different for different regions and different reservoirs. The significance of verifying the specific fluid recovery index of a single well segment is that it can effectively identify the "sweet spots" reservoirs under the existing technological conditions, and It can be combined with logging, seismic inversion and other technical methods to make effective predictions, so that the oil and gas reservoirs can be ...

AI Technical Summary

Problems solved by technology

[0003] However, the method for determining the specific production index in clastic rocks reported so far cannot be well applied to the field of extremely thick bioclastic limestone reservoirs. Sophistication of Liquid Index Determination

Therefore, the conventional method for determining the specific production fluid index cannot meet the production requirements of finely describing the ultra-thick carbonate reservoirs and the actual staged and accurate development of such reservoirs.

Images