Perforaccion dirrecional

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Introduction to Directional Drilling

Revised: 6/13/01

Page 1 of 52

Introduction to Directional Drilling
Subject Matter Experts: Raymond de Verteuil and Iain McCourt

Sugar Land Learning Center 1998, revised 2001

An asterisk (*) is used throughout this module to denote a mark of Schlumb erger © Copyright Schlumberger Technology Corp., unpublished work, created 1998, reviewed 2001.The following material includes Confidential, Proprietary Information and is a trade secret of Schlumberger Technology Corp. All use, disclosure, and/or reprod uction is prohibited unless authorized in writing. All rights reserved. This material may also be protected under laws of non -U.S. countries, including copyright and trade secret laws. Source: IntroToDD.pdf, Revised 6/13/01, SLC Introduction to Directional Drilling

Revised: 10/20/98 6:37 AM

Page 2 of 52

Objectives In this module you will learn to do the following: 1. Define directional drilling by choosing the correct answer from a list of selections. 2. Recall the historical development of directional drilling by choosing the correct answer from a list of selections. 3. Recognize the reasons for drilling the followingtypes of wells: exploration, appraisal, development/production. 4. Identify descriptions and pictures of directional drilling applications. 5. Identify several features of a directional well profile. 6. Identify the general types of directional well profiles. 7. Recall an explanation of a well plan by choosing an answer from a list of selections. 8. Identify the basic components of a well plan.Source: SLC IntroTo DD.doc Revised: 10/20/98 6:37 AM

Introduction to Directional Drilling

Revised: 10/20/98 6:37 AM

Page 3 of 52

1 Introduction
Directional drilling has become a very important tool in the development of oil and gas deposits. Current expenditures for hydrocarbon production have dictated the necessity of controlled directional drilling to a much larger extent thanpreviously.

Probably the most important aspect of controlled directional drilling is that it enables producers all over the world to develop subsurface deposits that could never be reached economically in any other manner. In this module a number of topics will be covered that must be understood by the directional driller. The various types of wells and applications of directional wells will betouched upon along with well profiles and well planning.

Source: SLC IntroTo DD.doc Revised: 10/20/98 6:37 AM

Introduction to Directional Drilling

Revised: 10/20/98 6:37 AM

Page 4 of 52

2 Directional Drilling
In this lesson you will learn to do the following: Define directional drilling by choosing the correct answer from a list of selections. Recall the historical development ofdirectional drilling by choosing the correct answer from a list of selections. 2.1 Definition of Directional Drilling Controlled directional drilling is the science and art of deviating a wellbore along a planned course from a starting location to a target location, both defined with a given coordinate system. 2.2 Description of Directional Drilling Drilling a directional well basically involvesdrilling a hole from one point in space (the surface location) to another point in space (the target) in such a way that the hole can then be used for its intended purpose. A typical directional well starts off with a vertical hole, then kicks off so that the bottom hole location may end up hundreds or thousands of feet or meters away from its starting point.

With the use of directional drilling,several wells can be drilled into a reservoir from a single platform.

2.3 Historical Development of Directional Drilling Directional drilling was initially used as a remedial operation, either to sidetrack around stuck tools, bring the wellbore back to vertical, or in drilling relief wells to kill blowouts. Interest in controlled directional drilling began about 1929 after new and rather...
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