Energy Sector

Compared with ordinary lubricating oils, high temperature lubricating oils have a significant difference in coping with high temperature environment.First, high temperature lubricating oils have a higher melting point. In a high temperature environment, ordinary lubricating oils are often prone to melting, resulting in a decline in lubrication effect. By adding special additives or improved grease formula, the high temperature lubricating oil can still maintain a stable melting point at high temperature, so as to ensure the lasting stability of the lubrication effect.Secondly, high temperature lubricating oils have better antioxidant properties. Under high temperature environment, ordinary lubricating oils are easily affected

A brief explanation of common drilling termsDrill bitDrill bit（MacDrill）is mainly divided into: scraper drill; Cone bit; Diamond drill bit; Carbide drill bit; Special drill bit, etc. The main indicators to measure the drill bit are: bit penetration and mechanical drilling rate.Eight pieces of drillThe eight parts of the drilling rig are: derrick, crane, travelling block, hook, faucet, winch, turntable, mud pump.Drill string composition and its functionThe common components of the drill string are: drill bit, drill collar, drill pipe, stabilizer, special joint and kelly pipe. The basic functions of the drill string are: (1) to pull off the bit; (2)

Micro-step liner hangerThe hanger is designed to suspend the liner string from the liner seat step in the upper casing by a micro-step. The tool is divided into two types: impact type and non-impact type. Micro-step liner hanger hangs the liner from the upper casing by the liner seat and micro-step of the liner hanger. This liner hanger has a 100% success rate. Compared with other liner hangers, it has the following features:1, reliable performance, large suspension force;2, simple structure, light weight, cheap price; The cement height on the outer return of the liner can be controlled by using the

The common formulas of drilling operations(A) pump conditions – the maximum allowable output power of the pumpN allowable pump=N amount ×η machine ×η capacityN allowable pump – the maximum allowable output power of the pump (horsepower)N amount – pump rated power (horsepower)η machine – Mechanical efficiency (80%-85%)η volumetric efficiency (80%)(2) the practical power of the pumpN Real – practical pump power (horsepower)P Total — total pump pressure (kg/cm2)Q — Displacement (L/s)(3) Pressure distribution relationshipP total =P cycle +P nozzle (kg/cm2)P cycle — Circulation system pressure loss (kg/cm2)P nozzle — nozzle pressure drop (kg/cm2)(4) Nozzle pressure dropP port =0.82ρQ2C2de4(kg/cm2)ρ — mud

Cementing is the operation of running a casing into a well and injecting cement into the annular space between the hole and the casing. Cementing is an indispensable and important link in the drilling and completion process, which includes casing (318) and cementing.Cementing technology is a multi-disciplinary comprehensive application technology, which has the characteristics of systematic, one-time and short time. The primary purpose of cementing is to protect and support the casing (318) in the oil and gas well and to seal off the oil, gas and water formations. Cementing design is the basis of cementing construction, which is the

Casing and casing stringOil well casing is made of high-quality steel seamless pipe or welded pipe, both ends are machined with conical threads. Most casing is made up of a casing string connected by a casing collar. Casing strings are used to seal exposed rock in well walls. Oil well casing has its own special standards, and each casing should meet the standards. The casing standard used in our country is similar to the API (American Petroleum Institute) standard.The API standard stipulates that the steel of the casing body should reach the specified strength, which is expressed by steel grade.

Wire rope grease is made of organic thickener group and high viscosity refined mineral oil, and added with anti-oxidation, anti-corrosion(766), anti-rust, anti-extreme pressure and other additives refined. Since the steel wire rope has been pre-lubricated in the manufacturing process, the steel wire rope surface grease is mainly used to reduce the friction between the steel wire rope, the steel wire rope and the equipment and prevent corrosion, which requires the steel wire rope surface grease products should have the following technical properties:1, excellent adhesionIt is required that the surface grease of the wire rope can adhere to the surface of

Low temperature valve(Valve Guardian) is a valve that works in low temperature medium. Common low temperature valves(1250) are divided into low temperature butterfly valve, low temperature gate valve, low temperature ball valve, low temperature globe valve, low temperature check valve, low temperature throttle valve, etc., mainly used in ethylene, liquefied natural gas installation, natural gas LPG LNG storage tank, acceptance base and satellite station, air separation equipment, petrochemical exhaust gas separation equipment, etc. Liquid oxygen, liquid nitrogen, liquid argon, carbon dioxide low temperature storage tank and tank truck, pressure swing adsorption oxygen production equipment. The output liquid low-temperature media such