Sliding sleeves – sometimes called sliding side doors (SSDs) – are manipulated by wireline locks and use nipple profiles. The figure below shows a typical siding sleeve. This sleeve uses a collet to ‘hold’ the sleeve in one of three positions (open, equalizing, and closed). Sliding sleeves have earned a poor reputation – they either …
An underground blowout is the flow of formation fluids from one zone to another. Most commonly, we can recognize the underground Blowout by a lack of pressure response on the annulus. And this response will be while pumping on the drill pipe or by a general lack of pressure response. The underground Blowout can be …
We will know from experience that the most challenging physical job on a drilling rig (also check: rig components) is when we are tripping pipe in and out of the hole. We will also know that we count the pipe in and we count the pipe out. The reason for counting the pipe is so …
A relief well is a directionally drilled (Directional Drilling) offset wellbore whose purpose is to intersect a well that has well control blowing out, thus enabling the control of the well blowout. Relief Well Plan The relief well plan shall contain, as a minimum: Relief Well Kill Requirement Limit Rate Modelling A relief well plan …
The BOP rams are the result of some eighty years of development in the BOP stack system. The first BOP ram was developed in the early 1900s. The ram preventer will only seal on the specific condition for which the ram block is designed. Rams are interchangeable between ram-type preventers of the same design and …
First of all this VAM TOP is one of Vallouric Company products, and we are not an agent to them or selling any of their product. VAM TOP is a threaded and coupled (T&C) connection for tubing and casing string types. It provides gas-tight sealing under the most severe conditions: VAM TOP thread minimizes the …
To determine the strength of various casing materials, API has designated defined grades. This grading system consists of a letter and number as P-110, L-80. The number is an arbitrary one (e.g. K-55) representing the min yield strength of the casing (Casing performance Properties), the number is an arbitrary one (e.g. N-80). There are also …
In API Buttress Connection Data sheet shows that the casing is externally threaded on both ends of non-upset pipe. The single lengths are joined by an internally threaded coupling. – The thread profile has flat crests and roots parallel to the taper cone with angles 3° and 10° to the vertical of the pipe axis; …
The American Petroleum Institute -API- has written the specifications & classes for cement that oil and gas companies used in oil-well applications. You can find these specifications in “API Specifications for Materials and Testing for Well Cements”, (API Spec 10). 8 Major API Cement Classes There are eight different API cement classes. Table 1 provides the classes …
A Mast in drilling (Check also: Rig derrick) is a steel framework with a square or rectangular cross-section comprised of multiple sections assembled together and shaped like a very pointed A. It has the particular feature of being rotary jointed at the base so that it can be assembled or dismantled horizontally and then pulled …