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tescocorp.com
©2015 Tesco Corporation.
Casing Running in China Results in Total Depth
Tesco True Results
CDS job in China
Customer Focus: The Fushun Block has a long horizontal section with Shale gas well designs and sometimes our client will need multiple wiper trips to make the conventional casing running successful. Even with wiper trips, there is no guarantee to run casing to target depth with conventional casing running equipment, so costand well safety concerns have been raised. The customer was looking for a solution to eliminate the need for wiper trips, which would improve cost efficiency and well integrity. Tesco External CDS service was proposed as the best solution.
True Result: In the Fushun Block, well depths reach 5,000 meters (16,400 ft) with horizontal sections extending over 1,700 meters (5,600 ft). Tesco’s External Casing Drive System (ECDS) was rigged up to run the 5”, 23.2# casing, after reaching total drilling depth of 3,300 meters (10,826 ft). Once reaching the horizontal section, the casing could no longer be run in the hole so the pumps were started to build circulation and the top drive rotation was set at 35 rpm with 13k ft.lbs torque setting. As a result, the casing was successfully run to target depth with an average run-ning speed of 5-6 joints per hour.
Proven Performance: The customer was very satisfied with the services provided by Tesco and the ECDS equipment and now believes fully in the technology. Although attempting to use a competi-tor casing running tool on one well unsuccessfully, the customer immediately returned to Tesco. Through reliable and customer focused service, Tesco has run the 5” cas-ing successfully on every well for this customer ever since.
Tesco’s Casing Drive System™ (CDS™) runs casing to Total Depth in difficult well trajectory.
True in our Service towards Customer Focus
Location: SiChuan Fushun
Service Provided: Casing Running, Casing Drive System, 5” Well Type: Shale Gas
Well Trajectory: Horizontal
Top Drive: Third Party
Casing Size/String: 5" / JFE BEAR or HYDRIL 513
Hole Size: 6 1/2”
Max Horizontal Section: 6,151 ft
Depth In/Out: 16,400 ft
Tripping Speed: 11 joints-per-hour
tescocorp.com
©2015 Tesco Corporation.
Casing Running in China Results in Total Depth
Tesco True Results
CDS job in China
客户关注: 富顺区块的页岩气井水平段比较长，如果采取常规方式下套管，往往需要多次通井，才能将套管下到目标层位，而且无法保证。由于增加了通井的作业，作业时间和成本也相应的增加了很多，并且增加了水平段井眼的安全风险。客户希望通过使用一种方式，在减少通井次数的情况下将套管安全下到目标层位，这样既可以减少作业的时间和成本，又同时提高了井眼的安全性。TESCO专利的顶驱自动下套管工具CDS提供了最好的解决方案。
作业成果: 富顺区块井深在5000米左右，其中水平段长度在1700米左右。客户在完钻后，没有通井直接使用TESCO的外卡式CDS工具开始下5” 23.2磅的套管，当套管下到3300米进入水平段的时候强烈遇阻，常规方法无法继续下入，我们通过开启泥浆泵建立循环，将旋转扭矩设定为13,000英尺.磅(17,650牛.米), 转速设定为35转/分钟，开始用顶驱旋转下入套管.我们成功的以平均每小时5-6根的速度将套管安全下到了目标井深。
成功推广: 我们的用户对于TESCO的顶驱下套管服务和CDS设备非常满意，并全面认可了这项技术。在富顺区块的一口井作业中用户曾尝试使用我们竞争对手的服务，作业失败后立即用回我们的服务。我们使用CDS 顶驱下套管技术，成功完成了该区块每一口井的5寸套管作业，获得了用户的一致好评。
Tesco’s Casing Drive System™ (CDS™) runs casing to Total Depth in difficult well trajectory.
True in our Service towards Customer Focus
Location: SiChuan Fushun
Service Provided: Casing Running, Casing Drive System, 5” Well Type: Shale Gas
Well Trajectory: Horizontal
Top Drive: Third Party
Casing Size/String: 5" / JFE-BEAR HYDRIL 513
Hole Size: 6 1/2”
Max Horizontal Section: 6,151 ft
Depth In/Out: 16,400 ft
Tripping Speed: 11 joints-per-hour
