Three "Sharp Tools" in Southwest Underground to Create Intelligent and Efficient Fracturing Sites

SINOPEC News Network News Since this year, the Southwest Engineering Company’s Downhole Operations Branch has fully promoted its innovation-driven strategy, and has taken the lead in implementing on-site equipment automation and intelligent transformation and upgrading in the fracturing sector.
It has successfully applied automatic sand conveying devices and liquid tanks for automatic storage and supply.
The three “weapons” of the hydraulic system and the 130 mm-105 MPa large diameter manifold have created an intelligent and efficient fracturing site, and the overall fracturing efficiency has increased by 30.
84%
.

Automatic liquid storage and supply system, one person controls 18 groups of liquid tanks

Liquid is the key material for fracturing construction and the material with the largest amount.
In recent years, with the continuous upgrading of fracturing technology, the scale of construction has gradually increased.
The consumption of some single wells has exceeded 10,000 cubic meters, and platform wells have exceeded 100,000 cubic meters
.

How to ensure large-scale and long-term stable fluid supply is the key to smooth fracturing

Subsequently, after making adaptive improvements to the trial situation, tests were conducted on the Yongye 6 platform and Dingye 3 well, and 89,000 cubic meters of automatic liquid storage and supply were completed
.

After two tests and evaluations, the automatic liquid tank storage and supply system has the advantages of sensitive control response, high accuracy, and high degree of automation.

Automatic sand conveying device, filling 3 tons in 1 minute

The shale gas fracturing construction has the characteristics of large construction scale, long continuous operation time, and high sand adding strength.
Because the fixed sand tank has a limited volume, it is necessary to continuously carry out sand filling operations during the operation
.

　　In the past, construction adopted crane hoisting and manual sand discharge mode, which has hidden dangers of slow efficiency and high risk of high-altitude operation
.

In response to this difficulty, the underground operation branch has investigated multiple work areas, conducted multiple demonstrations and tests, and finally successfully applied an automatic sand transport device on the Yongye 4-2 platform

　　During the operation, the automatic sand conveying device can monitor and feedback the sand conveying situation through the sensor, without the need for personnel to operate the tank, which greatly reduces the risk of high-altitude operation.
When there is no sand leakage, no sand and dust, environmental protection operations are realized
.

At present, 16 stages of construction work have been completed on the Yongye 4-2 platform, a total of 1071 bags have been hoisted, and the sand transport volume has been 1,616 tons

　　130mm-105MPa large diameter manifold, 1 instead of 6

　　Fracturing construction is a high-risk operation, and high-pressure manifolds are the biggest risk point.
Guarding these "lifelines" is the top priority of on-site management and control
.

In order to improve the efficiency of on-site operations and improve the safety of the on-site high-pressure manifolds, the downhole operation branch successfully applied 130 mm-105 MPa large-diameter manifolds through market research and field demonstration

　　This set of equipment adopts a modular shunt manifold structure, which connects the outlet of the fracturing high and low pressure manifold and the wellhead fracturing tree through a single high pressure flange pipeline to realize the single pipe transmission of high pressure fracturing fluid, which has changed the traditional multi-channel manifold.
The connection method of the pipeline to the wellhead can meet the needs of multi-wellhead zipper construction operations.
It has the advantages of large displacement, erosion resistance, and vibration resistance
.

It has obvious advantages in shale gas multi-wellhead fracturing construction .

　　At the same time, daily inspection costs have been greatly reduced
.

Up to now, the Datong Economic Manifold has successfully completed the 103rd section of the Yongye 8 platform and the Yongye 4-2 well, a total of 6 wells, which has greatly improved the operating efficiency of the "well factory zipper" fracturing construction, and has become a speeding-up South Sichuan page.