Can you present 3 case study about horizontal drilling with its complication pro

Question

Can you present 3 case study about horizontal drilling with its complication process and how horizontal drilling changing in drilling oil and gas company in todays days and age. How the Horizonatal drilling technique related to computer sicence and what kind of software they use for and if any source code you think or programme is good fit please provide that also.( Answer should be in details lay out of drilling engineering as well as its case study and in depth connection with computer science with some source code for programme. GOOD LUCK?)

Explanation / Answer

Ans:

CASE STUDY FOR HORIZONTAL DIRECTIONAL DRILLING

South Carolina Electric & Gas Company (SCE&G) of Columbia, SC., recently required a new installation of a 115-kV submarine electric power cable beneath the Cooper River in Charleston, SC. This crossing was a part of an overall project that entailed installing the 115-kV electrical power cable from the Charlotte Street Substation in Charleston, SC to a terminal structure in Mt. Pleasant, SC. a distance of approximately 2 miles.
Jacobs Civil Inc. (Jacobs) was engaged by SCE&G to perform a feasibility analysis for this project to
determine if Horizontal Directional Drilling (HDD) could be utilized to facilitate the installation of the line.
An 8.625-inch steel conduit would be installed by HDD nearly 7,000-ft across the Cooper River with
approximately 3,300-ft of open-cut required for the tie-ins. The results of the Feasibility Report
determined that the proposed HDD crossing was feasible.
When design was initiated this trenchless crossing would have been the longest completed HDD crossing in the United States. Construction began in fall 2003 on the open-cut section of the project with the HDD construction beginning in March of 2004.
Under an Engineering Procurement Construction Management (EPCM) contract, Jacobs also acted as a general contractor at risk and was responsible for the installation of the 115-kV line.

In July of 2001, the State of South Carolina Department of Transportation decided to construct a new
bridge across the Cooper River between the City of Charleston and Town of Mount Pleasant. The new bridge will replace two existing bridges to provide additional clearance over the river for container ships using the Port of Charleston which is located upstream of the existing bridges. SCE&G was required to replace an existing 115-kV overhead transmission line, which was attached to one of the bridges that spanned the Cooper River.
The existing 115-kV transmission line was installed on the Grace Memorial Bridge in the 1970’s and has
been a vital tie line between the City of Charleston and the high growth area of Town of Mount Pleasant
and East Cooper, South Carolina. The new Cooper River Bridge is currently under construction and it is
expected to be completed in May of 2005. Once the new bridge is completed, the Grace Memorial Bridge
and the other existing bridge paralleling it will be removed. The existing bridges crossing the Cooper
River are configured in two separate spans over the two shipping channels. The new bridge consists of a
single span which passes diagonally over a low point between the separate spans on the existing
bridges. As construction on the new bridge progressed over the low point on the old bridges, the existing
overhead line had to be lowered and removed from normal service. Eventually the overhead line had to
be removed totally from service due to clearance issues with the structural frame of the new bridge.
Because the existing electrical tie line between the two service areas was so important, SCE&G began
reviewing options in 2002 on how to replace it. An overhead line alongside the new bridge was
considered, but was rejected due to permitting issues and heavy commercial ocean ship traffic using the
Port of Charleston. Installing a power cable on the new bridge was also not considered feasible, because
the new bridge would not be completed in time for the cable to be energized before the old overhead tie
had to be taken out permanently of service. Therefore, SCE&G believed that the only viable alternative
was an underwater cable crossing downstream of the new bridge, which is in the narrowest section of
the Cooper River.
Although this is the narrowest section, the Cooper River is in excess of 7,000 feet wide at this point.
Laying the cable directly on the river bottom or burying it in a shallow trench was considered, but rejected
for several reasons. The main reason is that this area of the river is considered part of Charleston Harbor
and it is continuously being dredged to open the channels for the large commercial container ships.
SCE&G was concerned that river dredging presented a great risk of a dredge damaging the cable. Also
as container ships get larger, future dredging operations could get deeper. Another concern was that with
the large volume of commercial marine traffic in this area of the river, dragging anchors or other objects
falling in the river could also damage the cable lying directly on the bottom or buried in a shallow trench.
Therefore, SCE&G investigated the use of Horizontal Directional Drilling (HDD) to install the proposed
transmission line. SCE&G has successfully used this method to install other pipe-type underground
transmission lines in the Charleston and Beaufort areas, but those crossings were only approximately
5,000 in length.

Cutting-Edge, Environmentally Safe Horizontal Directional Drilling (HDD) Specialists:

Acts, Regulations & Code:

Alberta’s Occupational Health and Safety Act (OHS Act) – The OHS Act sets out the rights and duties of parties at a workplace. It establishes procedures for enforcing the law and sets the penalties for non-compliance. Source: Workplace Health and Safety, Government of Alberta

Alberta’s Occupational Health and Safety Regulation (OHS Regulation) – Made under the authority of Alberta’s Occupational Health and Safety Act, the OHS Regulation deals primarily with administrative and policy issues related to occupational health and safety. Source: Workplace Health and Safety, Government of Alberta

Alberta’s Occupational Health and Safety Code (OHS Code) – The OHS Code contains detailed technical requirements that support the Occupational Health and Safety Act and Regulation. The electronic version on the Workplace Health and Safety web site is for information only. The official version of the Code is available from Queen’s Printer.

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