3 results about "Drainage amount" patented technology

The invention discloses a pressure-controlled drainage gas production method and system for a coal-bed gas well. The pressure-controlled drainage gas production method comprises the steps that drainage is conducted through the first daily drainage amount, wherein the first daily drainage amount meets the eliminating demand for production interference objects in a coal bed; and a pressure-supplementing medium is injected while drainage is conducted, and the downhole flow pressure daily drop amount is maintained as a first differential pressure value so as to avoid retracting and closing of pores and cracks in the coal bed. According to the pressure-controlled drainage gas production method for the coal-bed gas well, the drainage speed at the drainage state can be conveniently determined, the eliminating demands for drilling and completion fluids, pulverized coal and slack coal in the coal bed can be met, and meanwhile, retracting and closing of the pores and the cracks in the coal bed can also be avoided; and compared with the prior art, the pressure-controlled drainage gas production method is simple in process, the production efficiency of the coal-bed gas well can be greatly improved, and quite high practical value and popularization value are achieved.

The invention belongs to the technical field of medical instruments, and particularly provides a digestive system department ascites drainage device which comprises two supporting mechanisms symmetrically arranged, a pull-out type bearing mechanism is arranged on the upper portions of the supporting mechanisms, a positioning mechanism is movably arranged on the pull-out type bearing mechanism, a transition mechanism is arranged on the positioning mechanism, and the transition mechanism is connected with the supporting mechanisms. The transition mechanism is connected with a puncture needle, and the pull-out type bearing mechanism is further provided with a magnetomotive adjusting mechanism. According to the ascites drainage device for the gastroenterology department, the body position of a patient and the position of the puncture needle can be stabilized conveniently, the electromagnetic principle is combined with an assembly type structure, and the arranged magnetomotive adjusting mechanism is used, so that the drainage speed can be dynamically adjusted according to the ascites amount in the abdominal cavity of the patient on the premise that the shape of the catheter is not changed in the ascites drainage process; when ascites in the abdominal cavity of the patient is reduced, the drainage speed is reduced in time, drainage is stopped in time when the drainage bag reaches the fixed drainage amount, and discomfort of the patient is avoided.

The utility model relates to the field of medical instruments, and discloses a thoracic cavity closed drainage device for lung leakage, which comprises a bottle body, a floating ball, a tray, a sleeve and a magnetic block, the bottle body comprises a hydrops cavity and an inward concave groove formed on the surface of the hydrops cavity, the magnetic floating ball is arranged in the hydrops cavity, the horizontal tray is arranged in the groove, and the magnetic block is arranged in the sleeve. A vertical sleeve is arranged below the tray, the tray is fixed to the top end of the sleeve, the sleeve can stretch out and draw back in the axis direction and drives the tray to move up and down in the groove, iron powder is placed in the tray, a magnetic block is arranged on the surface of the tray, and the magnetic force of the magnetic block is smaller than that of the floating ball, so that the iron powder can overcome the magnetic force of the magnetic block to move along with the floating ball; when the floating ball ascends, the iron powder is attracted by the floating ball and moves along with the floating ball, a layer of marker formed by the iron powder is formed on the side wall of the groove and used for indicating the height of the floating ball, nursing personnel move the tray to the current height of the iron powder after recording the height of the liquid level every time, and the nursing personnel can conveniently record the drainage amount.