新型射孔枪效率更高，可节省大量作业时间！
编译 | 大安 TOM
近日，DMC Global公司旗下子公司Dynaergetics宣布，其新型DS Trinity射孔系统的现场试验，取得了100％的成功率。DS Trinity系统作为DynaStage产品系列的一员，它在单平面上拥有三个射孔弹，且无需现场安装，是性能稳定的射孔系统。现场试验是在6寸套管内进行，使用了外径4寸的DS Trinity系统。
DS Trinity利用了Dynaergetics特有的专利技术，DS Trinity旨在提供更高的射孔作业效率，为开发商带来短小精悍的作业工具和经济高效的解决方案，使作业人员拥有更多的灵活性，帮助优化油气井的完井作业设计。DS Trinity的长度仅为8英寸，是传统射孔枪长度的三分之一，从而大大增加了每个井段的射孔枪数量。传统射孔枪是沿着枪的长度，螺旋布置射孔弹，而该系统在一个平面上布置射孔弹，从而缩短了射孔枪的长度。此外，该系统无需安装钻具组合中常有的射孔枪变扣接头。优化后的本体长度更短，使作业人员能够在每个井段中下入更多的射孔枪，还可降低所需的钻机吊车高度，减少所需的控压设备。
DynaEnergetics公司总裁Ian Grieves说：“我们的现场试验是与美国一家大型油气公司合作进行的，该公司为DS Trinity系统的关键特性与功能验证提供了重要的帮助。DS Trinity解决方案充分借鉴了已在业内获得美誉的DynaStage系统的性能、功能与安全性。而且，现场试验中取得的100％成功率，表明这两种系统都具有相同水平的可靠性。”
为了满足不同井况的作业，有多种DynaEnergetics标准射孔孔眼入口直径的射孔弹可供客户选择，以确保最佳的压裂效果。根据射孔弹的选择，单个DS Trinity系统可实现与传统四孔射孔枪或五孔射孔枪相当的射孔效果。与DynaStage一样，DS Trinity原则上是安全的，而且工厂组装，简化现场作业，同时性能可靠，可提高作业效率并加快生产井的投产速度。
据悉，DynaEnergetics计划在今年第二季度将外径4寸的DS Trinity型号商业化。运用于5.5寸套管内外径3.5寸的型号，预计在此后不久将会发布。在最近的一次现场应用中，一家开发商成功在6寸套管内进行了32级射孔作业。该客户的每级射孔作业利用了25套4寸DS Trinity系统，射孔间距仅为10英尺。试验完成后，射孔作业效果相当于普通射孔枪四次作业，效率可见一斑。
利用4寸射孔枪取代了3.125寸射孔枪，是为了减小枪体与套管的间隙。这使得射孔作业更为一致，并改善了压裂的作业效果。该系统还可加速泵入作业，减少用水量。基于试验的成功，该油气公司表示，在未来几个月内，将使用4寸DS Trinity系统来完成更多的作业。
DynaEnergetics, a business of DMC Global, announced it achieved a 100% success rate on field trials of its new DS Trinity perforating system. DS Trinity, which features three charges on a single plane, is a member of the DynaStage family of factory-assembled, performance-assured perforating systems. The field trials were conducted in 6-in. casing using a 4-in. outer diameter (OD) DS Trinity system.
The patent-pending DS Trinity was designed to deliver a cost-effective, length-optimized solution that provides operators with greater flexibility in designing their oil and gas well completions. At 8 in. in length, DS Trinity is up to 3.5 times shorter than conventional perforating guns, enabling much higher gun counts per stage. The reduced length was achieved by aligning the charges on a plane, versus the traditional spiral placement of charges down the length of a gun. The system also eliminates the sub adaptor typically used to connect adjacent guns in a string. The optimized length enables customers to run more guns per stage or reduce the required height of rig-up cranes and pressure control equipment.
“Our field trials were conducted in partnership with a large US-based operator that provided important input on the key features and functionality of the system,” Ian Grieves, President of DynaEnergetics, said. “The DS Trinity solution leverages the performance, features and safety of our commercially successful DynaStage system. Moreover, the 100% success rate achieved in the trials illustrates that both systems deliver equivalent reliability levels.”
Customers can choose from a selection of DynaEnergetics’ uniform entry-hole shaped charges, ensuring optimal fracture stimulation. Depending on charge selection, a single DS Trinity system enables perforating performance equivalent to traditional four- or five-hot guns. Like DynaStage, DS Trinity is intrinsically safe, factory assembled and performance assured, providing operating efficiency and accelerating the speed at which wells are brought onto production.
DynaEnergetics intends to commercialize the 4-in. OD version of DS Trinity in Q2. A 3 ? in. OD version designed for use in 5 ? in. casing is scheduled for release shortly thereafter.
Field trial summary
In one of the recent field trials, the customer successfully shot 32 stages in 6-in. casing. The customer utilized 25 4-in. DS Trinity systems per stage and perforated in 10-ft increments. The trial was completed with charges that provided the caliber equivalent of a four-shot gun.?
The 4-in. guns were used in lieu of typical 3 1/8 in. guns to minimize the gap between the gun body and casing. This created more consistent perforations and improved overall fracture stimulation. The system also enabled accelerated pump down operations and reduced water usage.?
Based on the success of the trials, the operator said it plans to complete additional jobs in the coming months using the 4-in. DS Trinity system.?