The objective of all sand exclusion techniques is to arrest the movement of formation sand into the well. Sand production can cause erosion of well equipment, well restrictions, and sand deposits in flowlines and other surface installations. In the case of gravel packing, the gravel should be placed directly against the formation so that formation … Completion Operations – Gravel Packing
This article describe the requirements and specifications for workshop intended to support well services operations. The work undertaken by a typical workshop may include: quality assurance checking of new equipment; pressure testing of equipment; make-up and testing of new sub-assemblies; valve testing; testing and calibration of bottom-hole pressure/temperature survey equipment; maintenance, setting and testing of … Workshop and support services
When buying tubulars, reference should be made on purchase orders to relevant international standards, such as API Specification 5CT and API Standard 5B on specifications for casing, tubing and threads. In the case of tubulars for example: 1.API SPEC 5CT, “Specification for casing and tubing”. Covers seamless and welded casing and tubing, couplings, pup joints … Completion Operations – Buying tubulars
Corrosion generally involves carbon dioxide (CO2), sweet corrosion, or hydrogen sulphide (H2S), sour corrosion. In both cases, water must be present for corrosion to occur. The problems can be minimised through the circulation of corrosion inhibiting chemicals or the selection of corrosion resistant alloys. The primary factors that affect the severity of corrosion are the … Corrosion
Close co-operation is required between the designer, drilling personnel, production personnel, engineering staff, and the representative of the Electrical Submersible Pump supplier. An integrated discipline approach during the installation phase is important to ensure that the installation is of the required standard, and results in minimum deferral of production. The quality of work and the … ESP – Safety
Early planning of artificial lift is essential for long-term profitability of the wells. Decisions on the artificial lift method to be used may not be available at the field development planning stage. In most cases the artificial lift systems are installed at a later stage in the field life cycle as reservoir energy is depleted … Completion Design – Artificial Lift
This article describe the categories and types of seals used for completion equipment. 2 categories of seals: static seals where the sealing surfaces do not move relative to one another, dynamic seals where the sealing surfaces do move relative to one another. 3 types of seals: polymeric or resilient seals. Which are either elastomeric (natural … Completion Seals
The purpose of the Safety valves is to protect people, environment and property from uncontrolled production. SSV: Surface Safety Valves: an automatic fail-safe closed valve fitted at the wellhead. SSSV: Subsurface Safety Valve: a valve installed in the tubing down the well to prevent uncontrolled flow in case of an emergency through the tubing when … Safety Valves
The following procedures on handling of equipment and cables are recommended to properly install or pull an Electrical Submersible Pump unit: The Electrical Submersible Pump, motor, and cable must be assembled and handled during installation or removal according to the manufacturer’s instructions. The Electrical Submersible Pump (ESP) supplier’s field engineer should be present whenever a … ESP – handling practices
This article describes the Standard Completion Designs. Monobore completion Completion with fullbore access across the payzone, without diameter restrictions (but not necessarily with a constant diameter from top to bottom). The monobore concept optimises the opportunity for well intervention through the Xmas tree, i.e. rig-less, and is applicable to any completion diameter. By working through … Standard Completion Designs