Wiper Trip Guide & Procedure

A wiper trip is often made before running the casing. This is because it is essential that the casing, once started in the hole, reaches the planned casing setting depth with minimal trouble. Therefore, the hole must be in the best possible condition before running the casing. Procedure On the last trip out of the …

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Rate of Penetration ROP in Drilling: A Guide

In the drilling industry, the rate of penetration (ROP), also known as penetration rate or drill rate, is the speed at which a drilling bit breaks the rock under it to deepen the borehole. It is generally measured in feet per minute or meters per hour. Generally, ROP increases in fast-drilling formations such as sandstone …

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Pore Pressure Prediction While Drilling

The only way to obtain information, before well drilling, on the nature and characteristics of the subsurface, including the pore pressure prediction, is through geophysical prospecting. The seismic reflection method is the most important and extensively used geophysical method for oil prospecting. Although geophysicists and geologists use seismograms mainly for subsurface structural and lithological interpretation, …

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Mud Cap Drilling Procedure

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 …

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Drilling Program Definition, Preparation Guide

The drilling program is the engineering design for the process of drilling and completion of the wellbore. The plan includes many data including well trajectory, casing design, mud program, well control, Drilling Bit Selection, geological data, formation gradient estimations, economics, and special procedures that shall be followed during the construction of the well. Although drilling …

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Single-Stage Cementing Procedure

In this article, we will discuss the practical right steps for the single-stage primary casing cementing job procedure in oil and gas wells. We have also discussed the multi-stage cementing job in one of our articles before. And we have summarized the important tips for successful primary cementing & Casing Cementing calculations to assist you …

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Drilling With MWD Operations & Procedures

Pre-job Requirements Pre-job Requirements An operating company wishing to use a Measurement While Drilling system must first decide: Where several different tools meet all the job requirements, some operators have a deliberate policy of trying out all the different systems to assess reliability and cost-effectiveness (check also oil well drilling well cost per foot). The …

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Mud Conditioning For Better Cementing

Drilling muds are designed to facilitate drilling operations and provide proper cuttings transport. They are not necessarily conducive to efficient mud displacement, logging, or completion operations. Therefore, it is often necessary to condition the mud (i.e., to modify mud properties). Before placing cement (Cementing in drilling) in the wellbore, two mud characteristics can be changed—density …

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