TDB hydraulic water shutoff profile control pump

Development and application of hydraulic machinery TDB hydraulic water shutoff profile control pump Wang Defu s Wang Haikun Zhang Ping Pan Hongzheng Gui Runtian (Dezhou Petroleum Machinery Factory) uses the principle of hydraulic transmission to convert the high speed rotating mechanical energy of the motor into the pressure energy of hydraulic oil through a constant power variable pump. The hydraulic pressure of the hydraulic oil is then directly converted by the hydraulic cylinder to the pressure energy of the working fluid through the piston, thereby changing the traditional mechanical transmission chain, reducing the transmission link, and achieving a high-efficiency transmission of energy. The characteristics of the constant power variable pump determine that the displacement of the pump decreases as the pressure of the formation rises. It is very suitable for water shutoff and profile control operations. Field tests have proved that TDB hydraulic water shutoff profile control pump has stable operation and low vibration. Wang Defu, an engineer, was born in 1968. He graduated from Petroleum University (East China) mine field in 1991 and is currently engaged in the design of oil drilling machinery. Address: (253007) Shandong Province has strong self-absorption capacity, long service life of consumable parts, and low shear rate of plugging agents. Subject heading Water shutoff profile injection equipment Reciprocating pump During the development of oil fields, especially in the middle and later stages of oil fields In the exploitation of oil reservoirs, water shutoff profile control and a variety of plug flooding tertiary oil recovery processes have been used extensively, and the amount of high pressure injection pumps required for injection equipment necessary for these processes has increased significantly. The current widespread use of traditional mechanical three-cylinder single-acting pumps (crank linkage and other types of mechanical pumps) has a common shortcoming, that is, bulky, short life of wearing parts, piston and liner life are only About 10Ch and 200h, some are even shorter. This not only greatly increases the cost of the injection equipment, but also seriously hinders and restricts the continuous injection of plugging agents, and reduces the oil increasing effect of the new oil extraction process.

After investigating various kinds of high-pressure injection pumps at home and abroad, Texas Petroleum Machinery Plant has developed a suitable water shutoff profile based on the analysis of a large amount of relevant data, and aimed at the special process of water shutoff and profile control, using hydraulic principles. The hydraulic reciprocating water shutoff profile control pump for injection and concentration operations is the TDB hydraulic water shutoff profile control pump.

The characteristics and technical parameters of the pump Field test and application prove that the TDB hydraulic water shutoff profile control pump has superior performance and reliable operation. Compared with the general mechanical three-cylinder single-acting pump, the field test has the following characteristics: Strong self-priming ability, no perfusion The pump can work normally; the wearing parts have a long service life; the service life of the piston, cylinder liner, valve body and valve seat at the hydraulic end is 10~20 times that of the mechanical single-cylinder single-acting pump; The shear rate of the agent is small, does not destroy the performance of the plugging agent, and the effect of water shutoff profile control and injection polymerization is good.

The main technical parameters of TDB hydraulic water shutoff profile control pump are: maximum working pressure 25MPa maximum displacement 12m3/h stroke times 10 ~18min, motor power 55kW, overall machine quality 5t. Main structure and working principle TDB hydraulic water shutoff profile control pump It consists of hydraulic control system, reciprocating pump, cooling system and base. It adopts the principle of hydraulic transmission to convert the high-speed rotating mechanical energy of the motor into the pressure energy of the hydraulic oil through a constant power variable displacement pump, and then converts the pressure energy of the hydraulic oil directly through the piston into the pressure energy of the working fluid by the hydraulic cylinder, by Wang Defu et al.: TDB The hydraulic water shutoff profile control pump has changed the traditional mechanical transmission chain, reduced the transmission link, and achieved high-efficiency energy transmission. The characteristic of the constant power variable pump is 2300. From the oil filter to the hose, it can be seen that all of the above flow types are turbulent.

The pressure loss calculation formula is along the v liquid average flow rate, m / s. Calculated by type (2) available: Pump to check valve pipe section where 1 = 61735Pa check valve to the filter section where 2 = 2057.7Pa , The oil filter to hose section AA3= 23522 Pa, the reversing valve to the hose section (back and forth) pL4=72321.8 Pa, the reversing valve to the hydraulic oscillator section (round trip) pL5 = 72301.8 Pa, so the total loss along the path is local The pressure loss calculation formula is calculated from formula (3): One-way valve to oil filter section Apri = 995.4 Pa Oil filter to hose section Apq=2126.9 Pa Reversing valve to hose section (return) Apr3= 2472.5Pa, reversing valve to the hydraulic oscillator pipe section (back and forth) Apr4=41209Pa; check from the performance curve, one-way valve Apr5=6000Pa reversing valve Apr6500000Pa so the total loss along the pipe=total pressure loss and pressure efficiency pipe The road total pressure field test section pump was tested at the Gudong Oil Production Plant in Shengli Oilfield. The injection medium was 15%~20% bentonite drilling fluid, SDT-01, polyacrylamide, and clear water, and the injection pressure was 6~25MPa. The amount is 8~12m3/h. During the use, the pump runs smoothly, vibration is small, suction Good performance, low failure rate (continuous and trouble-free operation time up to 50Ch), long wearing parts (cylinder liner and valve body, valve seat life of more than 5000h, the average life of the piston is more than 1000h), the shear rate of plugging agent is low, The pump inlet and outlet media viscosity retention rate is above 95%; the pump energy-saving effect is obvious, compared with the general mechanical reciprocating pump, saving more than 25%.