Casing (borehole) - Wikipedia
网页Casing is a large diameter pipe that is assembled and inserted into a recently drilled section of a borehole. Similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support the wellstream. The lower portion (and sometimes the entirety) is typically held in place with cement. [1] .
Casing and tubing - PetroWiki
网页2021年10月2日 · Casing is the major structural component of a well. Casing is needed to: Maintain borehole stability; Prevent contamination of water sands; Isolate water from producing formations; Control well pressures during drilling, production, and workover operations; Casing provides locations for the installation of: …
Well Casing - Water Well Journal
网页2023年8月18日 · Included are new borehole geophysical techniques, information on underbalanced and horizontal drilling, new approaches to well development, as well as details on ASR, groundwater monitoring and remediation, prepack screens for water interactive well design and well maintenance programs for water well contractors and design engineers.
Drilling, casing, tubing: the three phases of a wellbore
网页2021年7月3日 · The outer tubes are called casing. Casing lines the wellbore and thus protects the layers of soil and above all the groundwater from being contaminated by the drilling mud and/or frac fluids. It also stabilizes the wellbore, so casing must be able to withstand especially high loads.
Casing (borehole) Selection Guide: Types, Features, Applications ...
网页Casing is a large diameter pipe that is lowered and cemented in place in order to line the borehole of an open well. Casing strings are strategically sized and placed into the well so that drilling operations can reach desired depths.
Well Casing and Screen - The Driller
网页2008年3月1日 · To keep loose sand and gravel from collapsing into the borehole, it is necessary to use well casing and screen. The screen supports the borehole walls while allowing water to enter the well; unslotted casing is placed above the screen to keep the rest of the borehole open and serve as a housing for pumping equipment.
Casing design - PetroWiki
网页2024年8月2日 · For casing design purposes, establishing a directional plan consists of determining the wellpath from the surface to the geological targets. The directional plan influences all aspects of casing design including: Mud weight and mud chemistry selection for hole stability; Shoe seat selection; Casing axial load profiles; Casing wear; Bending ...
Optimizing Borehole Construction: Casing and Well Screens
网页2023年1月13日 · Borehole casing. Boreholes are constructed by inserting lengths of protective permanent casing. These are lowered or pushed into the hole by the drilling rig to the required depth; the lengths of casing may be joined together by means of screw threads, flange-and-spigot, glueing, riveting, or welding.
PEH:Casing Design - PetroWiki
网页2024年8月2日 · Casing is the major structural component of a well. Casing is needed to maintain borehole stability, prevent contamination of water sands, isolate water from producing formations, and control well pressures during drilling, production, and …
Casing - SpringerLink
网页2018年1月1日 · Well and borehole casing is a steel tubular pipe installed underneath the ground surface to access, extract, and transport natural resources from deep formations. Pile casing can serve as a permanent structural member to resist and transfer vertical and horizontal loads from superstructure to founding soil or rock.