Fracture and sand prevention integrated completion pipe string and application method thereof

Abstract

The invention relates to a fracture and sand prevention integrated completion pipe string and an application method thereof. The fracture and sand prevention integrated completion pipe string comprises a sand prevention pipe string and a fracture production pipe string; the fracture production pipe string comprises a safety valve, a first sliding sleeve, a production packer, a first landing joint, a locating seal, a first inserting seal, a second sliding sleeve, a second inserting seal, a second landing joint, a punching pipe, a NO-GO landing joint and a guiding shoe. The safety vale is arranged on the upper portion of an oil pipe. The first sliding sleeve, the production packer, the first landing joint and the locating seal are sequentially arranged on a portion, below the safety valve, of the oil pipe at intervals. The first inserting seal is arranged on a portion, tightly close to the bottom of the locating seal, of the oil pipe. The second sliding sleeve, the second inserting seal, the second landing joint, the punching pipe and the NO-GO landing joint are sequentially arranged on a portion, below the first inserting seal, of the oil pipe at intervals. The guiding shoe is arranged on the bottom of the oil pipe. The sand prevention pipe string comprises a top packer, a blind pipe, a sand prevention screen pipe and a third inserting seal, where the blind pipe, the sand prevention screen pipe and the third inserting seal are sequentially connected to the bottom of the top packer. Due to the adoption of the fracture and sand prevention integrated completion pipe string, fracture construction and sand prevention operation procedures are simplified, operation time is saved, operation cost is reduced, in addition, fracturing and production can be more convenient, selective single-layer development or multi-layer development can be achieved according to production needs, and production can be more flexible.

Description

technical field [0001] The invention relates to a well completion pipe string and an application method thereof, in particular to a fracturing sand control integrated well completion pipe string and an application method thereof which are suitable for sand control in loose layers and fracturing in tight layers. Background technique [0002] In the development of oil and gas fields, unconsolidated sandstones generally have high permeability but poor cementation, so sand control measures are required when completing wells. However, tight sandstone has low permeability, so reservoir stimulation measures are needed. Due to the large difference in reservoir physical properties, the two reservoirs are often not developed at the same time. However, as the development of oil and gas fields becomes more and more difficult, the requirements for the integrated development of different reservoirs are getting higher and higher, especially in offshore oil and gas fields, where there are ...

AI Technical Summary

Problems solved by technology

Due to the increase of the operation process, the completion time is greatly increased and the completion cost is increased

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