Well position design and real-time tracking and guiding method for thin difference layer horizontal well

Abstract

The invention provides a well position design and real-time tracking and guiding method for a thin difference layer horizontal well. The problem that for existing horizontal well deployment and guiding, an effective method process is lacked only from the single aspects of earthquakes, geology and the like is solved. The well position design and real-time tracking and guiding method comprises the following specific steps that S1, a horizontal well deployment method comprises the steps of optimal deployment, sand body depiction and simulation analysis; and S2, a horizontal well guiding method comprises the steps that different method flows are determined through the three stages of e, determining a marker bed, f, determining a target entering point and g, controlling a horizontal section. The horizontal section control comprises a three-dimensional model control method, an earthquake reservoir prediction method and a comprehensive control method. Through comprehensive analysis of multiple methods, horizontal well deployment, guiding process and nodularization, a set of complete horizontal well deployment and guiding method is formed. According to the well position design and real-time tracking and guiding method, multiple methods such as earthquake, geology, modeling and guiding are adopted to form a set of effective method flow, optimization of a horizontal well distribution block is guided, and the horizontal well deployment efficiency and the oil-containing sandstone drilling rate are improved.

Description

technical field [0001] The invention relates to the technical field of oil reservoir engineering, in particular to a well position design and real-time tracking and guiding method for horizontal wells in thin poor beds. Background technique [0002] my country's low-permeability reservoirs, like other medium-high-permeability reservoirs, are mostly formed in Mesozoic and Cenozoic continental basins, and have some basic sedimentary characteristics common to continental clastic rock reservoirs—multiple provenance, near provenance, Minerals and their structural maturity are low and sedimentary facies change rapidly. Onshore sedimentary systems are mostly large rivers to shallow water deltas, and channel sands are the main oil-bearing reservoirs. The reservoirs are not concentrated vertically, discontinuous horizontally, small in scale, and thin in single layer thickness, generally characterized by low porosity and low permeability. Therefore, how to explore and develop such thi...

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Problems solved by technology

[0004] The present invention is to overcome the problem that existing methods for horizontal well deployment and steering in the background technology are only lack of effective method flow from seismic, geological and other aspects, and provide a horizontal well location design and real-time track-oriented approach

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