Southwest Petroleum University

Lei Ding

Xiaohua Tan

Xiaoping Li

Hao Yang

Xian Peng

Honglin Lu

Yilong Li

Longxin Li

Taixiong Qing

The present disclosure provides a method for predicting a water invasion frontier for a complex well in a bottom-water gas reservoir. The technical solution is as follows: with consideration of forms of different well types and a gravitational pressure drop in production, a coupled permeability of a corresponding well type acting on a gas-water interface under the action of a baffle plate is expressed by using an equivalent percolation resistance method; a productivity of each infinitesimal section of the corresponding well type is calculated; a position of the gas-water interface is calculated with an equivalent permeability and a pseudo-productivity as characteristic parameters; water breakthrough is determined when there is a point over a water avoidance height, and a change in water invasion frontier form may be expressed with water quality point position data at this time.

Method for predicting water invasion frontier for complex well in bottom-water gas reservoir

The invention discloses an intelligent water-control and gas-diversion particle for water-gas reservoirs and preparation method and application thereof, comprising core support layer with barbs, expandable water shutoff layer, water discharge and gas diversion layer, migration protection layer and suspension lift layer; the expandable water shutoff layer is wrapped on the outer surface of the core support layer and the root of the barb; the water discharge and gas diversion layer is wrapped on the outer surfaces of the expandable water shutoff layer and the barbs; the migration protection layer is wrapped on the outer surface of the water discharge and gas diversion layer; the outer surface of the migration protection layer forms a sphere; the suspension lift layer is wrapped on the outer surface of the migration protection layer.

Intelligent water-control and gas-diversion particle for water-gas reservoirs and preparation method thereof

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Chengdu, China

Lei Ding