Development method of unitary quadrilateral continuous seamless partition radial multi-branch 3D injection and production

Abstract

The invention relates to a unit type four-side continuous seamlessly-sectionalized radial multiple-branch three-dimensional injection-production development technology, comprising the application of overall layout of an oil field well, an old well and an abandoned well, repeated mining of an injection well, identification of a collecting well, seamlessly sectionalized injection-production units and radial multiple-branch three-dimensional injection-production technologies. The technology is characterized in that the radial multiple-branch three-dimensional injection-production technology is adopted and residual oil, extra-heavy oil, low-permeability oil and isolated dead oil are swept away through the measures of radial deeper drilling of the injection well and the collecting well, increasing of well branches, transverse extending drilling, directional windowing, directional flow jetting, pressurized flow jetting, rock crushing and the like, in the injection-production units divided by virtual longitude lines of seamless sectionalization and virtual latitude lines of seamless sectionalization. Compared with the prior art, the technology provided by the invention has the advantages of once sweeping of residual oil storage, high productivity with less wells, great yield of few wells, increase of resource utilization rate, reduction of overall development cost of the oil field, reduction of unit oil production cost and the; and therefore, the technology has high development application value.

Description

1. Technical field [0001] The invention relates to oil recovery, in particular to a unitary tetragonal continuous seamless partition radial multi-branch three-dimensional injection-production development method. 2. Background technology: [0002] With the accelerated expansion of the world's energy demand, the limited mineral oil resources are becoming increasingly scarce and depleted. While focusing on developing renewable energy and searching for new energy, the remaining resources and difficult-to-recover resources of the oil fields that have been recovered have come into people's field of vision again, and more and more attention has been paid to them. The concept of secondary and tertiary recovery and many corresponding new technologies have emerged technology. Trying to change the local geological structure and comprehensive technical means through physical, chemical and mechanical methods, drill new wells, and excavate old wells and abandoned wells for secondary and ...

AI Technical Summary

Problems solved by technology

However, due to the strong selectivity, pertinence, limitations and utilitarianism in the application of these technologies, and the lack of overall and overall planning, it is impossible to eliminate all the remaining resources that can be recovered at one time.

For a new round of re-mining with higher technical content and greater capital investment, there is room for possibility and necessity

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