Evaluation of potential kick scenarios in riserless drilling
Abstract
In order to cope with the challenges the petroleum industry is faced with in deepwater exploration today, a Marine Riserless Drilling Joint Industry Project, MRDJIP, was formed. The main task for this project is to develop the technology neede to drill in water depths beyond 7500 feet - the practical limit of current floating drilling units. As a part of this project the members of the MRDJIP wanted to investigate the peak gas outflow rate when circulating a kick out through the return line(s). They found it important to know whether it is necessary to redesign the mud/gas separators already existing. In this thesis different cases affecting the peak gas outflow rate are discussed and suggestions on how to reduce the peak gas outflow rate are discussed and suggestions on how to reduce the peak gas outflow rates are purposed. This thesis also highlights the benefits of using a "dual-gradient" mud system as compared to drilling operations in which a conventional marine riser is used. It reports on how the number of casing strings can be significantly reduced and it also discusses the effect of static and dynamic kick tolerances on casing seat selection.
Description
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Includes bibliographical references (leaves 44-66).
Issued also on microfiche from Lange Micrographics.
Includes bibliographical references (leaves 44-66).
Issued also on microfiche from Lange Micrographics.
Keywords
petroleum engineering., Major petroleum engineering.