Method for improving drilling rate of horizontal well oil and gas reservoir

Abstract

The invention provides a method for improving the drilling rate of a horizontal well oil and gas reservoir. The method includes the following steps: step 1, collecting related neighboring well data; step 2, performing delamination on adjacent well strata near a target layer; step 3, performing vectorization on a designed structural diagram of the target layer; step 4, correcting the designed structural diagram of the target layer; step 5, establishing a target layer three-dimensional geological body; step 6, extracting a two-dimensional oriented profile; step 7, guiding on-site horizontal welldrilling. The method for improving the drilling rate of the horizontal well oil and gas reservoir can provide reliable information and bases for on-site trajectory control and adjustment, find a favorable position within the oil reservoir and ensure safety for drilling of complex horizontal wells, and the method has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of oil field development, in particular to a high water-cut oil layer and a water-flooded layer in the later stage of development, and relates to a method for increasing the oil-gas layer drilling rate of horizontal wells in such oil layers. Background technique [0002] With the continuous development of major oil and gas fields in China, the early reservoirs are thick and the high-yield oil and gas layers with high production have become higher and higher in water content due to long-term development, forming "floating on water" oil layers. The characteristic is that the bottom water and edge water of the oil layer are developed, and with the continuous development of the oil layer, the bottom water and edge water are on the rise, the oil layer is getting thinner, and the plane distribution is also shrinking. [0003] At present, with the continuous development of horizontal well development technology, th...

AI Technical Summary

Problems solved by technology

At present, there are some software tools in the industry, mainly for data processing and drawing of horizontal well completion data to help users evaluate and explain the drilling effect of horizontal wells. Such software cannot realize the function of guiding the real-time adjustment of trajectory on site; Other software that realizes on-site real-time trajectory adjustment mainly relies on the analysis of adjacent wells before drilling to determine the distribution of strata in the drilling area (mainly the dip angle of the stratum) and the depth of the target layer, and does not involve the real-time data of the well in real-time prediction. Depth of the target layer, analyze the difference and change of the dip angle of the formation, guide the on-site adjustment of the well depth estimation, the basis is weak, and the accuracy is low

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