The compact wellhead serves the same purpose as the convnetional wellhead, that is to serve as the suspension point for the casing strings in the well. The difference is that the compact assembly is just that, compact. It facilitates the suspension and setting of the casing strings over a shorter height. This saves space a … Continue reading Compact Wellhead
The cellar represents the dugout that is a few feet subsurface, this facilitates the setting of the conductor casing, and the mounting of the wellhead. Now the subsurface placement of the wellhead facilitates the mounting of the production and valve tree at near surface level thus facilitating easy access and operation. The cellar allows for … Continue reading Cellar and Wellhead
The casing spool represents the upper resting place of a casing string. The spool forms part of the wellhead assembly, specifically it facilitates the casing string resting there, its load being distributed to and supported by the ground. The casing hanger sits within the casing spool's bowl, with it resting on the load shoulder. Casing … Continue reading Casing & Tubing Spool
Primary seating and sealing is accomplished by the hanger in the bowl. This hanger grips the casing string and transfers the weight via the casing head shoulder to the first string casing and on to the ground. The casing hanger sits here when the casing is landed, now this does not necessarily mean that the … Continue reading Casing Head & Baseplate (Pt. 2 of 2)
The casing head represents the base of the wellhead assembly, it begins the transition of the wellbore from sub-surface casing to surface/topside infrastructure. The casing head is often attached to the first casing via threaded or slip on and welded connection. The head will be critical in supporting the weight of the wellhead and production … Continue reading Casing Head & Baseplate (Pt. 1 of 2)
These logs are capable of detecting formations less than 1.0in. thick, if the mud cake is very thin. Micro-laterologs can be used in salt muds and high resistivities. Their response will be affected by mud cake greater than 3/8" thick. Typically used to measure Rxo and determine permeable beds by detecting mudcake. Limitations Shallow invasion … Continue reading Micro-Resistivity
This is done to provide affective flow communication between reservoir and wellbore. The perforating jobs is irreversible and as such requires good planning. The shaped jet perforator is mechanically simple and reliable, with generally higher performance. Suits a wider range of completion needs. The wireline methods have offered depth control, selective firing speed and low … Continue reading Perforations
This a electrically powered pump that is inserted into oil-well bore to facilitate the lifting of the well bore fluid. The pump as its name implies is electrically powered and submerged in the fluid. The operation of the pump as with all pumps creates a pressure difference allowing the fluid to flow upward out of … Continue reading Electric Submersible Pump (ESP)