The acid fracturing hose application
The performance of an acid-fracturing hose is affected by several factors. These factors include the length and fracture conductivity, the speed of rock-acid reactions, and the shape and size of the acid. The fluid's viscosity is another important factor. In addition, a foamed acid is less prone to fluid loss.
The fracturing fluid is two-phase. It consists of polymers that expand to form a high-viscosity gel. The viscosity depends on the consistency of the bubbles in the fluid. A high-viscosity gel is preferred over a low-viscosity gel, as this can result in premature proppant settling.
Acid fracturing is most effective when a horizontal interval of 383 m is used. This increases the productivity of a well. An artificial plugging layer can be created at a lower rate of injection. This technique is also known as "segmented" acid fracturing.
A pH-adjusting agent is a key ingredient in a high-quality acid-fracturing hose. This additive can help control the acid's pH value and ensure that the other additives are working correctly. It can also minimize the friction generated when fluid is pumped down a tubing.
Despite these factors, an acid fracturing hose can only perform so well if it is equipped with the proper sealing devices. A Shuangyu gas reservoir can heat up to 160 degrees Celsius. A fracturing tube that is resistant to heat is essential for the successful completion of the project.
The crimping process for acid fracturing hose joint
Crimping is a critical part of acid fracturing hose joints in the oil and gas industry. The process of crimping the hose joint ensures that the acid used for the process will remain contained inside the hose. The crimping process also ensures that the hose joint will be flexible and resistant to the chemical agents used. Generally, the strength of the acid is about 15%. Higher strength acid can be used to increase penetration and etching. Formic acid and Acetic acid are two other acids that can be used. However, they are more expensive than HCl and are not appropriate for carbonate reservoirs.
Acid fracturing can be done in reservoirs that have temperatures of up to 160 degrees Celsius. The speed of acid reaction is affected by the reservoir temperature. The acid fracturing process will take longer if the reservoir temperature is higher. It is important to use high-temperature and high pressure resistant packers. These packers may be expensive and may not last long, especially if the fracture is wide.
A staged acid fracturing method is used for ultra-deep horizontal wells. There are typically four stages, with each stage measuring 50 m in length. This varies depending upon the reservoir size and the depth of well. Acid etched fractures may have a longer effective length and higher conductivity than other fractures.