Does Schlumberger do drilling?

Today, Schlumberger supplies the petroleum industry with services such as seismic acquisition and processing, formation evaluation, well testing and directional drilling, well cementing and stimulation, artificial lift, well completions, flow assurance and consulting, and software and information management.

How is sidewall coring different from conventional coring?

Conventional coring is performed as the zone of interest is being drilled; sidewall coring is carried out after that zone has been drilled. Each method yields distinctly different rock samples, and each requires its own coring strategy, procedures and equipment.

What are the advantages of side wall coring?

The advantages of this coring system are speed, low cost, and the precise ability to sample zones of interest after open hole logs have been run.

What is a sidewall core?

1. n. [Formation Evaluation] A core taken from the side of the borehole, usually by a wireline tool. Sidewall cores may be taken using percussion or mechanical drilling. Percussion cores are taken by firing hollow bullets into the formation.

How many types of coring are there?

TYPES OF CORING There are two main types of core drilling: hard coring and soft coring. This refers to the type of lithology each method is suited for.

What is core jamming?

In coring operations, core jamming is a permanent concern, taking place when the rock core sample becomes stuck within the inner core barrel, thus preventing further acquisition.

What is routine core analysis?

Routine core analysis determines basic petrophysical properties of cores or outcrop samples recovered from geologic formations at depth or at surface exposure. Cores evaluated include lithologies such as sandstones, un-cemented sediments, carbonates, shales, and coal.

What is engineering coring?

Coring is one method of collecting rock and sediment samples for geological research. A coring drill bit is designed with a central opening, around which the drill bit cuts the borehole.