{"id":566,"date":"2026-01-19T03:01:06","date_gmt":"2026-01-19T03:01:06","guid":{"rendered":"https:\/\/oilwelldirect.com\/?p=566"},"modified":"2026-02-27T10:19:24","modified_gmt":"2026-02-27T10:19:24","slug":"tds-11sa-top-drive-upgrade","status":"publish","type":"post","link":"https:\/\/oilwelldirect.com\/ar\/tds-11sa-top-drive-upgrade\/","title":{"rendered":"\u062a\u0631\u0642\u064a\u0629 \u0623\u062f\u0627\u0621 \u0646\u0638\u0627\u0645 Top Drive\u060c TDS-11SAE"},"content":{"rendered":"
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\u062a\u0631\u0642\u064a\u0629 \u0623\u062f\u0627\u0621 \u0646\u0638\u0627\u0645 Top Drive\u060c TDS-11SAE<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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The TDS-11SA top drive upgrade improves drilling efficiency, torque control, and operational reliability in demanding oilfield environments. This upgrade is essential for maintaining high-performance drilling operations and reducing downtime.<\/p>

For compatible drilling equipment systems<\/a> and certified top drive components, Oil Well Direct supplies reliable solutions for demanding oilfield operations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Why Choose a TDS-11SA Top Drive Upgrade?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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TDS-11SA Top Drive Upgrade solutions provide a cost-effective alternative to full system replacement. By enhancing torque capacity, control precision, and mechanical reliability, operators can extend equipment lifespan while maintaining high drilling performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Benefits of TDS-11SA Top Drive Upgrade<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Upgrading the TDS-11SA top drive system enhances torque capacity, reduces mechanical wear, and improves drilling consistency. It also supports better load handling and long-term equipment durability.<\/p>

You can find more benefits listed below:<\/p>

1- Allows 40% more torque on the top drive, enabling deeper drilling and translating to higher day rates.<\/p>

2- In terms of cost, the top drive is estimated at $500K to $600K USD. If your VFD is too old, it will need to be replaced with a new one, estimated at an additional $500K to $600K USD. The total estimated price is between $1M and $1.2M USD. A new top drive with a VFD will cost around $2.5M to $2.8M for the same torque.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Performance Improvements in TDS-11SA Systems<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The TDS-11SA top drive upgrade increases rotational stability, improves hydraulic efficiency, and ensures smoother drilling performance under high-pressure conditions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Subject:<\/p>

Product Model:<\/p>

Effectivity:<\/p>

Affected Assemblies:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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TDS-11SA 1200 HP Upgrade<\/p>

TDS-11SA and TDS-11HP Top Drive Systems<\/p>

All TDS-11SA and TDS-11HP<\/p>

Motor Housing Assembly (Various Part Numbers)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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TDS-11SA and TDS-11HP Top Drive Systems<\/p>

Objective<\/strong><\/p>

To advise customers of an available upgrade for the TDS-11SA and TDS-11HP Top Drives to convert from 800 HP to 1200 HP by adding 600 HP drilling motors, in addition to upgrading the gear box, power service loops, and variable frequency drive (VFD).<\/p>

Description <\/strong><\/p>

NOV has developed an upgrade kit to convert existing TDS-11SA and TDS-11HP 800 HP units to 1200 HP rated units. The kit includes important upgrades to the gearbox, motors, and the cooling system to safely accommodate the increased performance. Critical items including bearings, bearing housings, gears, and the gearbox cover, will be upgraded to ensure the top drive design integrity is maintained for the additional loading through the increase in horsepower. Once implemented, the top drive will be fully rated to the motor performance curves shown in Figure 1.<\/p>

Solution <\/strong><\/p>

This upgrade kit includes bearings, gears, main body cover, motors, blowers, oil cooler, encoder, and all applicable hoses, cables, and bracketry. Upgrading the inverters in the VFD house and the power service loops ensures the tool will consistently run at the higher continuous rated torque with no power loss. NOV will not support VFD modifications by third parties, as outlined in Product Bulletin 1000033750-PIB. Service loops and VFD configurations will be reviewed at the time of request due to the variety of configurations deployed in the field.<\/p>

With a 5-year interval overhaul schedule, this fully engineered upgrade will maintain the same 20 year expected service life, under normal operating conditions, as a brand-new TDS-11SA or TDS-11HP Top Drive. Due to the complexity of the motor housing modifications, this upgrade must be performed at an NOV Rig Systems Service Center. Once upgraded, the 1200 HP top drive will be fitted with a new nameplate with the upgraded model name: TDS 11SAE.Initially the upgrade will be available for API 500 \/ 505 Class 1 Div 2 or Zone II applications, with the ATEX, IECEX versions following.<\/p>

Caution: Upgrading the TDS-11SA with larger motors only and not performing the gear box, service loop, or VFD upgrades is not recommended by NOV as this could lead to premature bearing and gear failure due to the deflections, fatigue, and heat induced by running at higher speeds and torque than designed for. This type of unapproved modification to the top drive system could not only reduce tool life but will void warranty.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Ordering Information \/ Contact Information <\/strong><\/p>

Please contact National Oilwell Varco (NOV) Aftermarket at RA-AM@nov.com with reference to Product Bulletin # 1000012173 for further assistance.<\/p>

Economic Impact <\/strong><\/p>

All parts, necessary software updates and installation are at Customer cost. Parts will <\/strong>be supplied by NOV, delivered FCA, NOV facility, (Incoterms 2010), for all equipment defined <\/strong>by NOV to be affected by the above described issue<\/strong>.<\/p>

Customers should also refer to previous NOV Product Bulletins for additional information regarding safe<\/p>

operation, maintenance, and inspection criteria by signing in to https:\/\/access.nov.com. For information on registering, please follow the first-time user instructions posted on the landing page.<\/p>

Product Improvement Notification bulletins are intended to inform the customer of available upgrades to existing equipment. To view other product bulletins please sign in to https:\/\/access.nov.com. <\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Oil Well Direct supplies certified TDS-11SA top drive upgrade components<\/a> sourced from approved manufacturers to meet demanding oilfield requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What is included in a TDS-11SA top drive upgrade?<\/strong>
Upgrade packages typically include control system enhancements, torque improvements, and selected mechanical component replacements.<\/p>

Is upgrading more cost-effective than replacing the entire top drive?<\/strong>
In many cases, upgrading offers significant cost savings compared to purchasing a new top drive system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Top Drive Upgrade Performance, TDS-11SAE The TDS-11SA top drive upgrade improves drilling efficiency, torque control, and operational reliability in demanding oilfield environments. This upgrade is essential for maintaining high-performance drilling operations and reducing downtime. For compatible drilling equipment systems and certified top drive components, Oil Well Direct supplies reliable solutions for demanding oilfield operations. Why […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-566","post","type-post","status-publish","format-standard","hentry","category-blog"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/posts\/566","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/comments?post=566"}],"version-history":[{"count":61,"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/posts\/566\/revisions"}],"predecessor-version":[{"id":1675,"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/posts\/566\/revisions\/1675"}],"wp:attachment":[{"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/media?parent=566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/categories?post=566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oilwelldirect.com\/ar\/wp-json\/wp\/v2\/tags?post=566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}