Formation Pressure Enhancer

Formation Pressure Enhancer Instructions for Use

Well surge is not afraid, well blowout is not afraid, up and down drilling is not afraid of obstruction, well slope is not afraid, horizontal section is not afraid of even longer, rock paste layer is not afraid, rock chip slurry is not afraid, rock chip is not afraid of not up and down return is not afraid, poor mud mobility is not afraid, mud resistance is not afraid, falling block well collapse is not afraid, afraid of what? Fear of well leakage, fear of differential pressure well leakage due to low formation pressure!

In the long 9 + 10 oil layer horizontal section drilling process, often due to the nearby pumping wells and lead to lower formation pressure, when the mud specific gravity is greater than 1.1 on the occurrence of large leakage, which brings great difficulties to the mud work, mud specific gravity is small, the upper strata (especially the long 7 + 8 of the charcoal shale mudstone) on the fall of the block collapsed, the rock debris is not easy to return to the top, it is prone to burying the drilling accident, the mud ratio of the major, and the mouth is not returned to the slurry, due to oil layer As the pore space of oil layer sandstone is very small, the conventional plugging material cant plug the pore space completely, which leads to repeated plugging and repeated leakage, and there is no way to bring the leakage drilling, a well duration is extended by one month, and the mud cost is increased by 600,000 yuan, which becomes a sad ending.

In the drilling process of Liujiagou Formation and Shiqianfeng Formation, due to the low pressure of the formation itself, once the specific gravity of mud is greater than 1.12, leakage will occur, which brings great confusion and risk to the mudder, if you raise the specific gravity, leakage will occur immediately, if you dont raise the specific gravity, you will have to drop the block and the danger of the rock chips burying the drill.

How to solve the contradiction between differential pressure leakage and stabilization of well wall and smooth carrying of rock chips?

How to solve this problem with formation pressure enhancer?

The main component of formation pressure enhancer is fiber silk, fiber powder, its coarseness is less than the sandstone pore space and the length is 2 times of the rock pore space.

Principle of leakage plugging: Stratum pressure enhancer fiber silk, fiber powder like snakes or worms into the sandstone pore or mud page fissure, constantly reduce porosity and fissure area, constantly enhance the formation pressure resistance, when the amount of stratum pressure enhancer into the formation reaches saturation, the pore or fissure is completely blocked, the mud leakage will be stopped, the stratum pressure will be greatly enhanced, the specific gravity of the mud can be increased to The specific gravity of mud can be increased to 1.50 and no more leakage occurs, so the problems of well caving and upward retum of rock chips will be solved.

Dosage and use: There are three ways of use.

The first method of use: after the occurrence of well leakage, immediately stop drilling, quickly bring the drill bit above the leakage layer, then turn on the pump to circulate, and at the same time, add 3-5% of the formation pressure enhancer according to the overall mud volume (e.g., the mud volume of 100m3 in and out of the well, 3 tons to 5 tons are needed), and then go down to the bottom of the well one by one to row the eye. At this time, the formation pressure has been enhanced, you can add bentonite or limestone powder to raise the specific gravity.

The second method of use: after the occurrence of well leakage, stop drilling, outside the well with a ratio greater than 50% of the original slurry slurry (slurry volume for the total amount of mud in the well), and then add 5% of the formation pressure enhancer (i.e., 1m3 will be added to the 50 kg), circulate uniformly, with a pump all sent to the well, leakage, regardless of it, after the static for 6 hours, so that the formation pressure enhancer as much as possible to enter the stratum to maximize the enhancement of stratum Pressure resistance. In the process of quiescence, outside the well and then match the proportion of mud with the same specific gravity as before the leakage, and then normal drilling can be resumed after 6 hours.

The third method of use (applicable to the leakage of horizontal section of oil formation) after the leakage of the well with 40m3 of heavy slurry with specific gravity of 1.3, in the heavy slurry add 10% that is, 4 tons of formation pressure enhancer, and then sent to the well, finished and then send 20m3 ordinary slurry, close the sealer, and then crapped into the 10m3 of ordinary slurry, static for 6 hours, then drilling with the former slurry, it cant be. Stratigraphic pressure enhancer is Yanan Chaozheng Mud Co., Ltd. 7 years, after thousands of failures, and finally in July 2013 only successfully developed a high-tech products. It solves the world problem of differential pressure sex loss, and will eventually bring great economic benefits to the well team!