Sandblasting perforating annular fracturing ground control system and method

Abstract

The invention discloses a sandblasting perforating annular fracturing ground control system and method. The system comprises a fracturing annulus pumping system, a coiled tubing pumping system, a wellhead device, a wellhead pressure control throttle manifold, a coiled tubing vehicle, a coiled tubing, a waste liquid recovery tank and a throttle manifold; the wellhead device comprises a Y-shaped four-way, a double-gate valve and a wellhead large four-way which are connected in sequence, the fracturing annulus pumping system comprises a liquid filling vehicle, a sand filling vehicle, a sand mixing vehicle, fracturing vehicle groups and a fracturing manifold, the liquid filling vehicle and the sand filling vehicle are connected to the sand mixing vehicle separately, and the fracturing vehiclegroups are connected to two passages of the Y-shaped four-way and the coiled tubing vehicle respectively. The sandblasting perforating annular fracturing ground control system and method have the advantages that it can be achieved that the sanding operation of sandblasting perforating operation and a fracturing process by using one sand mixing vehicle through the system, the data collection and display work of the pumping pressure of the two fracturing vehicle groups are achieved during sandblasting perforating pumping pressure, wellhead pressure and fracturing, and washing of a wellbore fromthe coiled tubing or backwashing of the wellbore from oil jacket annulus is achieved.

Description

technical field [0001] The invention relates to a staged fracturing operation equipment for oil and gas wells and horizontal wells, in particular to a ground control system and method for sandblasting and perforating annulus fracturing. Background technique [0002] As reservoir stimulation plays an increasingly important role in the development of oil and gas fields, sandblasting and perforating annular fracturing technology, as a main reservoir stimulation technology, has been widely used in major oil fields. Compared with other fracturing technologies, it can complete multi-cluster perforation and multi-stage fracturing at one time, realize the combined operation of perforation and fracturing, and will not pollute the formation during the perforation process, which greatly improves the hydraulic pressure. Crack construction efficiency. In the process of sandblasting and perforating, the sand in the sand tanker is pumped into the tubing or coiled tubing through the fractu...

AI Technical Summary

Problems solved by technology

However, the entire perforation and fracturing process needs to be completed under the same ground control process. The acquisition system on the instrument vehicle can only display two pressure channels. Buried, the casing cannot be fired or the formation cannot be pressed, or even the ground manifold bursts and other safety accidents

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