The standpipe manifold is one of the drilling rig components on the rig floor. From here, the driller can line up the mud pumps to the top drive system or the drilling kelly. This is also where we can fit the manifold gauges showing the driller’s mud or the standpipe pressure. It is essential to …
Oil & gas blind drilling is the process of drilling at the minimum possible pump rate to conserve drilling fluid stocks while the annulus is topped up with water. If returns begin while drilling, this might indicate that the circulation loss zone has been plugged with drilled cuttings. However, it could also indicate the onset …
After taking an influx, closing the BOP stack & shutting in the well, pressure will build up on the standpipe and casing gauges. This is because of the hydrostatic under balance (drilling fluid weight too low to balance formation pressure). The pressure on the standpipe manifold is “Shut In Drill pipe Pressure” SIDPP, and what …
In general, good operating practice calls for regaining circulation before drilling ahead. However, in some companies, there is one notable exception: mud cap drilling. Mud-cap drilling permits continued drilling despite a pressured formation and a lost-circulation zone in the same interval of the open hole. Although mud-cap drilling has been employed in a limited manner …
There are two basic types of well completions techniques: There is also another classification for well completion depending on the well Production Mode. This classification shall include the following: Open Hole Well Completion Type The open hole completion has the production casing set above the target intervals. We complete such a well with the producing …
A multiple completion is one where we can produce several different reservoir zones through separate flow paths within the same wellbore. As we shall see, we may accomplish this with tubing/annulus flow, multiple tubing strings, or by cementing several independent tubing strings in the same wellbore (a multiple tubingless completion). Reasons For Multiple Completions A …
In Oil and gas industry, you may search a lot to get advice from an expert. You may use Linkedin groups, Facebook groups, or any social media. But to be sure that you have got the correct answer, it will be difficult on social media. Here comes the drilling forum role. The experience in the …
Flowing wells equipped with a single tubing string are usually completed with a packer. Single-zone completions may involve the downhole commingling of production from several intervals within that zone. Examples of single-zone completions are shown in Figure 1. At the design stage, optimum tubing size for maximum long-term flow rate, future artificial lift needs, and …
The casing is placed in the open hole completion type and cemented above the productive interval(s). Further drilling extends the well bore into and/or through the reservoir(s) left uncased, hence the term ‘Open Hole’; See Figure below. All open-hole completions avoid the cost and complexity of perforating but have their complications. Advantages This type of …
Stick-slip torsional drill string vibrations manifest in low-frequency torque fluctuations of significant amplitude during drilling or coring operations. It is often seen as a groaning noise emanating from the top drive or rotary table. The period of oscillation is typical of the order of 2-10 seconds. This period corresponds to the first eigenfrequency of the …