Three-dimensional (3D) horizontal well borehole track controlling method
A control method and wellbore trajectory technology, applied in wellbore/well components, directional drilling, earth-moving drilling, etc., can solve the problem of high cost and achieve the effect of low cost, easy construction and easy operation
Active Publication Date: 2015-04-01
CHINA PETROLEUM & CHEM CORP +1
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The invention relates to a three-dimensional (3D) horizontal well borehole track controlling method, and belongs to the technical field of oil and gas well drilling. The method comprises the steps of determining well drilling parameters according to well drilling equipment and formation lithology; measuring a borehole parameter by measurement-while-drilling tools, revising a formation vertical depth by using geological logging, designing points to be drilled according to known measuring points, regarding the vertical depth as a control target, continuously revising a 3D well section track until drilling to a 3D well section end turning direction; revising a target entering point vertical depth by using geological logging again, performing two-dimensional well drilling to a target point, and performing horizontal section well drilling by using reservoir lithology and horizontal section well inclining determination drilling tool assembly. The 3D horizontal well borehole track controlling method disclosed by the invention has the advantages that firstly the conventional well drilling and directional equipment is used, the cost is quite low, and promotional values are available; secondly, geosteering is performed by using conventional logging, the track is revised continuously, and the shooting precision is greatly improved; thirdly, the design and construction are integrated, the site directional construction is operated easily, and directional engineers construct conveniently.
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