Patent ID: 11879319
Assignee: TONGJI UNIVERSITY
Field: Civil engineering (Other fields)
Classification: CPC E  Y | IPC E

Claim 0:
1. A method for exploiting underground resources with a negative thixotropic fluid, comprising:
obtaining a stratum structure and hydrogeological data of a reservoir;
determining a fault distribution and structural features according to the stratum structure and the hydrogeological data;
constructing an injection well on a basis of the fault distribution and the structural features, and forming a connected fracture network in a stratum through a hydraulic fracturing method;
injecting a negative thixotropic fluid into the stratum by the injection well at a set injection pressure, to fill a fault and a fracture network with the negative thixotropic fluid;
increasing an injection pressure of the negative thixotropic fluid until the fault or a fracture in the reservoir is induced to generate a slip, and stopping injection;
forcing the negative thixotropic fluid that loses negative thixotropy out of the fault and the fracture network after injection of the negative thixotropic fluid is stopped;
carrying out production operation on a production well in the reservoir until a fluid at a wellhead of the production well has a flow amount than a set value; and
continuing to inject the negative thixotropic fluid into the stratum by the injection well at a set injection pressure, to fill a fault and a fracture network with the negative thixotropic fluid.