What is well intervention services?
Well intervention is the ability to safely enter a well with well control for the purpose of doing a number of tasks other than drilling. • Well intervention historically was done with drill rigs, with an 18-3/4” BOP and 21” marine riser as the only means of well access with well control.
What is snubbing unit?
Snubbing units, also referred to as hydraulic workover units (HWU), are used to perform well intervention on live or dead oil and gas wells. They are used to drive pipe into a well bore and overcome well pressure that is preventing conventional drill rig operations.
What is coil tubing in oil and gas?
In the oil and gas industries, coiled tubing refers to a very long metal pipe, normally 1 to 3.25 in (25 to 83 mm) in diameter which is supplied spooled on a large reel. It is used for interventions in oil and gas wells and sometimes as production tubing in depleted gas wells.
What is Rigless operation in oil and gas?
1. n. [Well Completions] A well-intervention operation conducted with equipment and support facilities that precludes the requirement for a rig over the wellbore. Coiled tubing, slickline and snubbing activities are commonly conducted as rigless operations.
What is the difference between workover and well intervention?
Workover is an important part of the field development costs These oilfield maintenance operations aim at optimizing oil or gas production and keeping it to satisfactory levels. Well-intervention operations mean essential investments in the life of the well.
What is well snubbing?
Snubbing is a technique to install or remove tubular from a well, while the well remains pressurised, also known as a ‘live well’. Snubbing is used when it is not possible, or not desired, to kill a well (dead well). Killing a well means depressurise the well by pumping a heave fluid or mud inside the well.
What is wireline well intervention?
Wireline services consist of various well intervention functions that are accomplished under pressure by “running” and “pulling” tools into and out of the wellbore by the use of a continuous length, small diameter wire mounted on a powered reel at the surface.
What is radial drilling in oil and gas?
Radial/Jet drilling involves jetting lateral holes of approximately 50 mm diameter up to 100 m laterally from the well bore by jetting high pressure fluid using micro-CTU. Lateral bores can be jetted at single or multiple layers.
What is E line well intervention?
Wireline / E-Line Technology. In the oil and gas industry, the term wireline usually refers to a cabling technology used by operators of oil and gas wells to lower equipment or measurement devices into the well for the purposes of well intervention, reservoir evaluation, and pipe recovery.
What does a snubbing operator do?
The primary role of the Snubbing Operator is to help with the operation of snubbing equipment, rig up and rig down equipment, perform maintenance of equipment, maintain and submit time sheets in a…
What does a coiled tubing operator do?
Coiled tubing operators must be able to transport equipment to and from the well location, safely rig in and operate the equipment, perform day-to-day inspections, servicing and maintenance of equipment, and complete all required paperwork accurately and on time.
What is coiled tubing intervention?
Increasingly, the coiled tubing unit is used for many well intervention operations and certain drilling applications. Coiled tubing (CT) refers to a continuous length of small-diameter steel pipe and related surface equipment as well as associated drilling, completion and workover, or remediation, techniques.
What are the three common types of wireline used in well intervention?
This is done by using coiled tubing, electric line (e-line), slickline and braided wireline to perform through-tubing.
What is Rigless drilling?
What is jet in drilling?
1. n. [Drilling] A small-diameter tungsten carbide nozzle used in drill bits to produce a high-velocity drilling fluid stream exiting the bit. Synonyms: jet mixer.
What is Rigless intervention?
1. n. [Well Completions] A well-intervention operation conducted with equipment and support facilities that precludes the requirement for a rig over the wellbore. Coiled tubing, slickline and snubbing activities are commonly conducted as rigless operations. © 2022 Schlumberger Limited.
What is the difference between wireline and slickline?
While a slickline is a thin cable introduced into a well to deliver and retrieve tools downhole, a wireline is an electrical cable used to lower tools into and transmit data about the conditions of the wellbore. Usually consisting of braided cables, wirelines are used to perform wireline logging, as well.
What is a rigless well intervention?
Rigless techniques for well intervention are wireline, coiled tubing (CT) and hydraulic workover (HWO) services that do not require the use of a conventional workover rig and have the capability of performing downhole applications in live (under pressure) wells.
Why choose our rigless abandonment solution?
Our goal is to minimise each client’s per well abandonment cost without comprising on safety or harming the environment whilst delivering the best technical solution. Our approach is based on combining a cost-effective vessel-based platform with specialist bespoke rigless abandonment equipment to deliver a fit for purpose solution.
What is the difference between dry well and subsea well intervention?
But subsea well intervention in deepwater is typically much more expensive than dry well intervention due to the high day rates of floating vessels and the equipment costs of the subsea systems that are required to access the wellbore. The selection of the floating vessel and the subsea system is therefore critical.
What downhole applications are performed during well interventions?
Downhole applications that are performed during well interventions include well surveillance and diagnostics, implementation of reservoir management techniques, completion repair and re-entry drilling to reach new producing intervals.