贝克休斯推出的新型马达可大幅提高钻进速度，在大位移井中同样有效！

编译 | 惊蛰

通用电气旗下的贝克休斯（BHGE）最近推出了Navi-Drill DuraMax马达，该马达可为钻头提供更高功率，从而实现更高的机械钻速（ROP）。最近，再达科他州北部Williston盆地的作业中，作业工期缩短了40%，机械钻速提高了35%。今年3月5日，海牙举行的2019年SPE/IADC国际钻井会议上，BHGE公司钻井马达高级产品经理Thomas Jaeger在视频中介绍了该马达的研发历程，以及区别于市场上其他产品的关键特征。

Navi-Drill马达为大位移井的钻进作业提供了可靠性与耐用性，一趟钻即可完成造斜段与水平段作业。Navi-Drill马达可承受高钻压（WOB）与高泵速，从而能够输出更高的功率与扭矩，以提高机械钻速。而且，其可为钻头提供更大的动力，同时最大限度地减少钻进所需的能量，以最快的速度与效率钻至完钻深度。

作为最新一代高性能容积式马达，Navi-Drill由BHGE工程师利用先进的技术，进行了全面的重新设计。重新设计了钻头至弯头连接，二者距离更短，可提供更高的造斜率，同时还可提供更高的钻压与耐用性。仿真驱动设计还可实现预测性维护，减少马达故障并减少非生产时间。

更结实的弯头以及能多输出15%扭矩的动力装置，可推高钻井极限。Navi-Drill马达可承受更大的泵速范围，进而在转盘转速方面有更多选择，最终可使钻头的功率提高40％。并且，您可在更小的压差下作业，同时还能获得理想的机械钻速。这种新型马达平台可提供您所需的输出功率，以大限度地发挥钻井性能。

案例研究

美国德克萨斯州西部Permian盆地的一家油气公司寻求BHGE公司的帮助，以缩短钻进造斜段与水平段的作业时间。该区域的油气井通常利用造斜调整性更高的导向工具，来完成造斜段的钻进作业。可是，由于其造斜调整性更高，该旋转导向工具在水平段中无法获得较高的机械钻速。

BHGE团队推荐了新型Navi-Drill DuraMax可导向钻井马达，以提高钻进性能并减少新马达和钻头在造斜段与水平段的起下钻次数。坚固耐用的DuraMax马达具有更短的钻头至弯头距离，可成功钻出造斜率高的井段。作业者利用这种坚固的马达，能够以更高的转速与高钻压(WOB)旋转钻具，与邻井相比，在水平段中拥有更优异的表现。

在Wolfcamp 油田的一个地层中，5.125寸的Navi-Drill DuraMax D75- 5095C马达钻出了6.75寸的造斜段与水平段。在80个小时作业时间内，钻进 2332米，平均机械钻速为35米/小时）。在造斜作业中，该马达保持了稳定的造斜率，超出了预期。通过在一天内钻进了3127英尺（953米）的水平段，BHGE使整体机械钻速提高了30%，从而为客户节约了3天工期。

达科他州北部Williston盆地的一家油气公司正在开发一口水平分支井。钻头磨损严重影响了钻进作业的时效，在先前14口井的作业中共用坏了8个钻头。BHGE公司利用5寸Xtreme eXtend马达以及多种钻头，获得了成功。但这套BHA钻具振动较大，影响了随钻测量（MWD）的可靠性。

BHGE团队决定使用其新型5.125寸Navi-Drill DuraMax马达与Dynamus钻头，来降低振动，提高钻进速率。事实证明，这是一个成功的组合。该团队钻进水平段的时间，比邻井缩短了两天，提效了40%。这种组合还将振动减少了20％，从而仅需一趟钻，就完成了该井段的钻进作业。

在首次作业中，BHGE仅用了46.3小时，就钻进了3138米的6寸水平段，创造出新记录。从组装BHA到完钻后拆卸BHA，总工期3.3天。而先前，该作业者钻一口多分支井的平均工期为5.2天，钻进作业时间为68小时，两者相比，效果如何，一目了然。钻井工期缩短了40％，机械钻速增加了35％。

Baker Hughes, a GE company (BHGE),recently introduced the Navi-Drill DuraMax motor, which deliver increased power to the drill bit for higher rates of penetration (ROPs). In a recent application in North Dakota’s Williston’s Basin, the motor was used to improve drilling time by 40% and increased rate of penetration (ROP) by 35%. In this video with Thomas Jaeger, Senior Product Manager for Drilling Motors with BHGE, at the 2019 SPE/IADC International Drilling Conference on 5 March in The Hague, Mr Jaeger discusses the motor’s development and key features that distinguish it from others on the market.

Navi-Drill? DuraMax? motors provide increased reliability and durability for longer runs and extended laterals—letting you drill the curve and lateral in one run.

The motors high weight-on-bit (WOB) and flow-rate capability help it deliver increased horsepower and torque for faster penetration rates. And, these motors deliver that increased power to the drill bit while minimizing the energy needed to drill—helping you reach total depth with maximum speed and efficiency.

This latest-generation of high-performance positive displacement motors has been completely redesigned by BHGE engineers using state-of-the-art technology. The redesigned motors’ short bit-to-bend configuration allows higher build-up rates while delivering superior WOB and durability. The simulation-driven design also enables predictive maintenance, mitigating motor failures and reducing non-productive time.

Push your drilling limits with a stronger lower end and power sections that deliver 15% greater torque. The higher flow rate range permits more options when it comes to RPM, leading to 40% more horsepower at the bit. And, you can run with less differential pressure while still achieving desired? penetration rates. This new motor platform delivers the output you need to maximize your drilling performance.

Navi-Drill DuraMax saves customer 3 days of rig-time in the Permian Basin

An oil producer in the Permian Basin of west Texas, USA, contacted Baker Hughes, a GE company (BHGE), to help provide a solution that would reduce the amount of time spent in drilling curve and lateral hole sections. The wells in this area typically require a steerable motor with a highadjustable kick-off (AKO) setting to achieve the build-up rate (BUR) necessary to drill the curve section. However, a high AKO setting can compromise the rate-ofpenetration (ROP) in the lateral section.

The BHGE team recommended their new Navi-Drill? DuraMax? steerable drilling motor to improve performance and reduce the number of trips made for new motors and bits through the curve and lateral sections. The ruggedized DuraMax motors, with a shorter bit-tobend, successfully drilled the high BUR curve section. The rugged motor design also enabled the operator to rotate the drill sting at a higher RPM and a high weight-on-bit (WOB), compared to offset runs, and delivered optimized performance in the lateral section.

The 5-?-in. Navi-Drill DuraMax D75- 5095C motor drilled the 6-?-in. curve and lateral section in the Wolfcamp A formation. The DuraMax motor drilled 7,652 ft (2,332 m) in 80 drilling hours and maintained an average ROP of 114 ft/hr (35 m/hr). The motor delivered a consistent BUR in the curve, exceeding expectations. By drilling 3,127 ft (953 m) laterally in one day, BHGE provided a 30% improvement in overall ROP, which saved the customer 3 days in rig-time。

Navi-Drill DuraMax improved drill time by 40% and ROP by 35%

An operator in North Dakota’s Williston Basin was developing a lateral Three Forks well. Drill bit consumption was reducing performance, with 8 drill bits damaged on 14 previous wells. Baker Hughes, a GE company (BHGE), had been using the BHGE 5-in. Xtreme eXtend motor with various bits with reasonable success but experienced moderate vibration levels, impacting measurement while drilling (MWD) reliability.

The BHGE team decided to use its new 5-?-in. Navi-Drill DuraMax? motor with the BHGE Dynamus? drill bit to reduce vibration and improve production and ROP. This proved to be a winning combination. The team completed the lateral section 2 days faster than with offset wells, a 40% improvement. This combination also helped to reduce the vibrations by 20% to help complete the section in a single run.

BHGE drilled a 6-in. lateral of 10,294 ft (3138 m) in 46.3 drilling hours?a record performance?on the first attempt. The total time from the pick-up to the laydown of the BHA was 3.3 days. This compared favorably to the operator’s average Three Forks well time of 5.2 days and 68 hours per 10,000 feet (3048 m) drilled. Drilling days were reduced by 40% and ROP increased 35%