KNOWLEDGE OF FRAC TREES

The Concept of Frac Tree:

The frac tree is an important part of the fracturing equipment, which is mainly composed of multiple fracturing gate valves and fracturing heads.

The Main Role of the Frac Tree:

Input from multiple fracturing manifolds into the fracturing head, enter the fracturing gate valve, and enter the bottom of the well for fracturing operations. The fracturing gate valve is used to control the fracturing operation.

Fracturing refers to the construction process of forming high pressure in the wellbore to force the formation to form fractures. Usually refers to hydraulic fracturing. Hydraulic fracturing refers to the application of the principle of hydraulic pressure transmission. The high-pressure working fluid carrying proppant is pumped from the ground to form and maintain fractures in the formation. It is an effective production increase widely used at home and abroad. Injection measures. Due to the high conductivity fractures filled with proppant, it is equivalent to expanding the radius of the wellbore, increasing the leakage area, and greatly reducing the seepage resistance. Therefore, it can greatly increase the production of oil and gas wells, increase the production rate, shorten the production cycle, and reduce production cost.

Fracturing equipment and tubing-ground equipment:

1.Fracturing wellhead

 Fracturing wellheads can generally be divided into two categories:

① Fracturing the wellhead with a Christmas tree.

② Special fracturing wellheads with large bends, pitchers, wellhead ball valves and wellhead controllers.

2.Fracturing manifold

At present, there are many types of fracturing manifolds, and their bearing capacity and maximum sand passing capacity are also different. Commonly used are fracturing manifolds and dedicated surface manifolds. The special ground manifold has 8 connection heads, and the fracturing car can choose any one connection. The high-pressure pipeline has an outer diameter of Ф76mm and an inner diameter of Ф60mm. The highest pressure can reach 100MPa.

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