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A sealed metering tank is a pressurized vessel used in well completion and workover operations to accurately measure the volume of fluids entering the wellbore or returning to the surface, serving simultaneously as a storage unit, a metering device, and a buffer. Its fully enclosed design prevents the loss of volatile components—such as light hydrocarbons or acidic fluids—while enabling real-time volume readings via differential pressure or radar level gauges, thereby providing essential data for evaluating acidizing and fracturing performance, calculating formation fluid intake, and determining flowback rates. This paper outlines its structural features, factors influencing measurement accuracy, and operating procedures.
2026-07-03
Purification Slurry Dynamics — The Technical Value of Iron-Removal Equipment for Drilling Mud
Mud‑iron removal equipment is a specialized purification unit within the solid‑control system of drilling fluids, designed to eliminate both magnetic and nonmagnetic ferrous particles generated during mud circulation due to drill‑bit wear, formation abrasion, and pipe‑wall corrosion. If these fine iron particles are not promptly removed, they can exacerbate abrasive wear on pump pistons, cylinder liners, and the inner walls of hydrocyclones, while also interfering with the magnetic signals of logging‑while‑drilling tools. This paper presents the equipment’s magnetic separation principle, the criteria for selecting it, and the methods used to verify its performance.
2026-07-03
Systematic Application of the Choke and Kill Manifold: The Core of Well Control Barriers
The choke and kill manifold is a critical surface‑level flow‑control system used in drilling and workover operations to actively manage wellbore pressure. By combining adjustable flow valves with multi‑port manifolds, it enables precise release of downhole fluids during shut‑in and kill procedures, maintaining bottomhole pressure slightly above formation pressure and thereby preventing overflow from escalating into a blowout. This paper analyzes its structural principles, operational logic, and key maintenance considerations.
2026-07-03
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