Applications & Industry Records | 7000+ Well Applications

7000+Well Applications 60+Industry Records 15+Major Basins & Regions 20+Product Areas

Field Coverage

Coverage across major Chinese oilfields and selected overseas projects

PECOME technologies and products have built sustained field experience across major Chinese oil and gas operations as well as selected overseas projects in Central Asia and the Middle East, covering complex wells, deep wells, long laterals, salt-gypsum intervals, shale oil and gas, reservoir protection, and stimulation.

PetroChina Xinjiang, Tarim, Tuha, Qinghai, Changqing, Huabei, Dagang, Daqing, Southwest Oil & Gas, and Hainan Fushan oilfields.
Sinopec North China, Shengli, Jiangsu, and related oilfields.
CNOOC Bohai, Western South China Sea, and Eastern South China Sea oilfields.
Selected overseas projects in Central Asia, the Middle East, and related markets.

PECOME field application scene in complex oilfield geology — **7000+** well applications **15+** major basins and regions **60+** industry records

Deep and complex wells

Fluid-system support for density control, wellbore stability, and reservoir protection.

Salt-gypsum and unstable formations

Inhibition, plugging, filtration control, and lubrication to reduce operation risks.

Stimulation and fracturing

Technologies focused on proppant transport, flowback, and stimulation efficiency.

Field Applications & Industry Records

Nearly 30 years of field records

Content migrated from the original “Applications” section in PECOME Website 2026.sparkle and updated to the current structure: applied across 15+ major basins and regions in China and overseas, with 7,000+ drilling wells, 500+ completion wells, and 60+ industry records classified into seven categories.

15+ Major Basins & Regions

PECOME products and technologies have built sustained application experience across 15 major Chinese basins, oilfield regions, and selected overseas projects. In accordance with applicable confidentiality requirements, well names are anonymized as xxx.

Junggar BasinXinjiang Oilfield

Tarim BasinTarim Oilfield

Tuha BasinTuha Oilfield

Qaidam BasinQinghai Oilfield

Songliao BasinDaqing Oilfield

Ordos BasinChangqing Oilfield, Sinopec North China Oilfield

Hetao BasinBayan Oilfield

Bohai Bay BasinDagang, Huabei, Jidong, and Shengli oilfields

Subei BasinJiangsu Oilfield

Beibuwan BasinCNOOC Zhanjiang, PetroChina Fushan, Sinopec Xuwen

Sichuan BasinSouthwest Oil & Gas, Zhaotong shale gas, Sinopec Nanchuan

IndonesiaMadura Oilfield

IraqHalfaya, Missan, and Ruk projects

KazakhstanKyzylorda and Aktau oilfields

UzbekistanMingbulak, Fergana, Ustyurt, Surkhandarya, and other assets

60+ Industry Records

More than 60 industry engineering records over 20+ years

First accident-free well in 20 years on the Southern Junggar Margin — xxx well (2001).
First safe well with the shortest cycle in 15 years in the Tarim YT-Quele belt — xxx well (2002).
First accident-free well in the Eastern Junggar Santai area — xxx well (2003).
First accident-free well in the Huabei Gaojiabao structure — xxx well (2003).
First Paleogene oil discovery in Junggar Basin history: 10-m oil interval — xxx well (2007).
Santai Area, Eastern Junggar: WEIGH system increased productivity by 2.8x in reservoir-protection application (2007).
First horizontal well in Northern Santai, Junggar — xxx well (2008).
Record fracturing bottom-hole pressure in Sichuan carbonate reservoirs: 207 MPa — xxx well (2008).
Highest-producing well in Junggar over a 5-year period: 522 m3/d oil — xxx well (2008).
First trouble-free well in Indonesia Madura Field — xxx well (2010).
Dagang Offshore horizontal WEIGH reservoir drilling campaign: average production uplift of 5.7x across 5 wells and 4.5x across 32 wells (2010).
Deepest well in Huabei Oilfield at the time: 6027 m, BHT 201 ℃ — xxx well (2011).
Fastest drilling record in Dagang offshore: 13.42 days — xxx well (2011).
China’s longest horizontal section at the time: 2111 m — xxx well (2011).
Highest oil well productivity in 33 years of Huabei Oilfield: 649 t/d oil and 560,000 m3/d gas — xxx well (2011).
Longest drilled salt/anhydrite interval: 3026 m — xxx well (2012).
Deepest 22” hole section in China: 3039 m — xxx well (2013).
Highest daily ROP in a 17-1/2” hole section: 856.2 m/day — xxx well (2013).
Deepest and fastest 17-1/2” section in China: 5541 m in 90 days — xxx well (2013).
Fastest five-string well structure drilling in Kuqa Front: 6948 m in 199 days — xxx well (2013).
Shortest cycle for 2000-2500 m horizontal wells: 4.38 days — xxx well (2013).
Shortest cycle for 2501-3000 m horizontal wells: 5.0 days — xxx well (2013).
Shortest cycle for 4001-4500 m directional wells: 17.48 days — xxx well (2013).
Shortest cycle for 4501-5000 m directional wells: 18.02 days — xxx well (2013).
Shortest cycle for 4000-4500 m horizontal wells: 14.17 days — xxx well (2013).
Highest horizontal-well gas production record in Qinghai Dongping-Niudong gas field: 530,000 m3/d — xxx well (2013).
First branch horizontal well in Qinghai Oilfield — xxx well (2014).
Highest vertical-well gas production record in Qinghai Dongping-Niudong gas field: 250,000 m3/d — xxx well (2014).
Highest single-well natural-gas daily production in 60 years of Qinghai exploration: 600,000 m3/d — xxx well (2014).
Multiple Qaidam Basin wells successively refreshed single-well daily production records, all exceeding 1,000 t/d (2016).
Largest horizontal displacement record in Fushan Oilfield: 2636 m — xxx well (2017).
Deepest and highest-temperature well in Qinghai Oilfield at the time: 7100 m, 195 ℃ — xxx well (2017).
Highest-temperature well in Qinghai at the time: 210 ℃ — xxx well (2017).
Highest-temperature well in Yumen Oilfield at the time: 6558 m, 180 ℃ — xxx well (2018).
Belt & Road flagship well in Uzbekistan set overseas CNPC records for deepest large-diameter casing setting and longest sealed/cemented interval — xxx well (2018).
Highest single-run build-section footage in Mahu 18 area: 861 m/run — xxx well (2018).
Deepest horizontal well in Mahu at the time: 6130 m — xxx well (2018).
Fastest well construction cycle in Mahu: 46.5 days — xxx well (2018).
Highest-temperature well in Qinghai at the time: 240 ℃, 6500 m — xxx well (2019).
China’s longest land horizontal section: 4088 m — xxx well (2019).
Deepest well in 64 years of Qinghai E&P: 7310 m, 196 ℃, 140 MPa — xxx well (2019).
Largest onshore shale-oil horizontal well platform at the time: 20 horizontal wells and 28,000 m of high-quality reservoir encountered — xxx platform (2019).
Highest-temperature well for Western Drilling at the time: 235 ℃ — xxx well (2020).
National horizontal section record: 4118 m — xxx well (2020).
National deep-horizontal section record and Changqing deepest-well record: 8008 m well depth and 4466 m horizontal section — xxx well (2020).
Qinghai’s longest horizontal section: 2537 m — xxx well (2021).
First water-based drilling fluid application replacing oil-based mud in Sinopec Nanchuan shale-gas area: 1228 m horizontal single run — xxx well (2021).
Qinghai horizontal-section and single-run footage records: 2541 m horizontal section and 1566 m single-run footage — xxx well (2021).
Asian onshore longest horizontal section record: 5060 m — xxx well (2021).
Asian largest onshore horizontal well platform: 31 horizontal wells and 54,800 m reservoir encountered — xxx platform (2021).
Horizontal section of 1593 m with a 7.7-day drilling cycle, comparable to North American speed — xxx well (2021).
Updated Asian onshore longest horizontal section record: 5256 m — xxx well (2021).
First high-density shale-oil pre-exploration horizontal well in the Yingxiongling structural belt of Qaidam Basin, marking a major exploration breakthrough — xxx well (2021).
Highest WBM temperature and highest WBM density records in Daqing: 200 ℃ and 2.20 SG — xxx well (2021).
Fastest horizontal drilling cycle in Qinghai — xxx well (2022).
Deepest well in Huabei at the time: 7162 m — xxx well (2024).
Huabei deepest well, deepest coring interval, and deepest 333.4 mm openhole drilled in Eastern China: 7921 m — xxx well (2025).
Two records in the Horgos block of Xinjiang Oilfield: longest single-bit footage and highest ROP in a 444.5 mm second section — xxx well (2025).
Fastest drilling-cycle record in the Mosuowan block of Xinjiang Oilfield: 5570 m well depth and 52-day drilling cycle — xxx well (2025).
Huabei large-size casing setting-depth record: 339.73 mm casing set to 3337 m — xxx well (year not specified in source).

Selected Field Cases

Featured engineering cases

The following examples synthesize recently reviewed Weigh, NATU, NFA-25, and NAX50 materials. They are simplified for public communication and anonymized where required.

NAX50 · CBM horizontal wells

Dual-layer sealing in Ordos Basin coalbed methane wells

NAX50 combines a nano-scale inner adsorption film with an outer compressible filter cake to reduce fluid invasion and stabilize cleated coal, mudstone interbeds, and naturally fractured intervals.

Field highlight: validated in a 165 mm slim-hole horizontal well, with stable long laterals, clean trips and casing runs, and block records including an 18.38-day drilling cycle and 12.71 m/h ROP.

Weigh^® · Shale gas

Water-based alternative to oil-based mud in shale-gas laterals

The Weigh organic-salt system supports shale-gas horizontal drilling with wellbore stability, inhibition, lubrication, and environmental advantages for oil-based mud replacement.

Field highlight: successful water-based replacement of oil-based mud in the Nanchuan shale-gas area, including a 1228 m horizontal single run.

Weigh^® · Shale oil

Shale-oil applications in Qingcheng, Yingxiongling, and Gulong

For long laterals, high-density mud, strong inhibition, and reservoir protection, Weigh organic-salt fluids have built continuous field experience in key shale-oil projects.

Field highlight: applied in Changqing Qingcheng shale oil, Qinghai Yingxiongling shale oil, and Daqing Gulong shale oil drilling-fluid programs.

NFA-25^® · Nonfluorescent stabilization

A cleaner alternative to sulfonated asphalt

NFA-25 is a nonfluorescent, non-asphaltic wellbore-stability additive that helps create a tough, compressible, low-permeability filter cake and reduce fluorescence interference during logging.

Use cases: water-based muds in shale, salt-gypsum, HTHP, offshore, and environmentally sensitive operations.

NATU^® · Environmental WBM

Natural-polymer drilling fluids at field scale

NATU uses modified natural-polymer additives to build an environmental water-based drilling-fluid system for encapsulation, filtration control, wellbore stability, and reservoir protection.

Field highlight: applied in 1800+ wells across more than 10 oil and gas fields, including Tarim, Xinjiang, Sulige, Daniudi, Shengli Chengdao, and Beibuwan projects.

Weigh^® · Ultra-deep / HTHP

High-temperature, high-pressure, and high-density WBM control

In ultra-deep, high-temperature, and high-density water-based mud scenarios, the organic-salt system supports inhibition, thermal stability, rheology, and fluid-loss control.

Field highlight: Qinghai and Daqing records include 200-240 ℃ wells and 2.20 SG high-density water-based mud applications.

Organic salts · Weighted stimulation

Weighted stimulation fluids for deep high-pressure reservoirs

Organic-salt weighted stimulation technology helps balance density, rheology, reservoir protection, and operational safety in deep, high-pressure, complex reservoirs.

Field highlight: selected Sichuan Basin and related cases are presented in anonymized form to protect confidential well information.

Field Evidence Figures

Application figures from field materials

The following figures are selected from internal field-application materials and adapted for public website communication. Captions focus on technical phenomena and engineering conclusions; specific well names and non-public details are not expanded in website text.

NATU fishbone horizontal branch well trajectory figure — NATU natural-polymer WBM supports fishbone-style horizontal branch drilling with wellbore stability, hole cleaning, and operational continuity.

NATU^® Natural-Polymer Drilling Fluid Technology · Branch laterals

Continuous drilling in a fishbone-style horizontal well

NATU natural-polymer WBM supports complex well trajectories, including mainbore and multiple branch laterals, with emphasis on wellbore stability, hole cleaning, and operational continuity.

Weigh organic-salt system caliper-control log in a Huabei block, with 6.7% enlargement — Huabei complex-formation caliper comparison: the Weigh organic-salt system recorded 6.7% enlargement, compared with 50% in an adjacent KCl sulfonated-polymer system.

Adjacent-well KCl sulfonated-polymer system caliper log, with 50% enlargement — Huabei complex-formation caliper comparison: the Weigh organic-salt system recorded 6.7% enlargement, compared with 50% in an adjacent KCl sulfonated-polymer system.

Weigh^® Organic-Salt Drilling Fluid Technology · Caliper control

Caliper enlargement control in complex formations

The organic-salt system combines inhibition, sealing, and filtration control to reduce enlargement risk and support casing running and subsequent operations.

Weigh organic-salt reservoir-protection field curve from the Tangjiahe block in Dagang Oilfield — The Tangjiahe field curve provides application evidence for Weigh organic-salt fluids focused on lower interfacial tension, reduced water blocking, and reservoir protection.

Weigh^® Organic-Salt Drilling-In Fluid Technology · Reservoir protection

Reservoir-protection applications in tidal-flat operations

For offshore and tidal-flat reservoirs, Weigh organic-salt fluids focus on permeability retention, contamination control, and safer drilling and completion execution.

Weigh caliper comparison in a Qinghai salt-gypsum interval — Weigh organic-salt drilling fluid supports stable drilling through salt-gypsum intervals with inhibition, anti-sloughing, and rheology control.

Weigh^® Organic-Salt Drilling Fluid Technology · Salt-gypsum intervals

Stable drilling through complex salt-gypsum intervals

For salt-gypsum intervals and wellbore-instability risks, the organic-salt system supports inhibition, anti-sloughing, and rheology control to reduce stuck-pipe and logging obstruction risks.

Weigh long-lateral low-drag field comparison figure — Weigh organic-salt drilling fluid supports long laterals and extended-reach wells with drag control, trajectory management, and casing-running conditions.

Weigh^® Organic-Salt Drilling Fluid Technology · Long-lateral drag control

Drag control in long laterals and extended-reach wells

For long laterals, extended-reach wells, and complex trajectories, the organic-salt system supports lubrication, wellbore stability, and rheology control to reduce drag-growth risk and improve casing-running conditions.

Weigh shale-oil pilot field comparison figure — Weigh organic-salt WBM supports shale-oil pilot field comparisons as a water-based alternative path to oil-based mud.

Weigh^® Organic-Salt Shale-Oil Drilling Fluid Technology · Field comparison

Field comparison in shale-oil pilot wells

In shale-oil horizontal-well pilots, the organic-salt WBM has been evaluated against oil-based systems, with focus on ROP trends, wellbore stability, environmental replacement potential, and long-lateral drilling continuity.

Eight-well same-pad comparison: the organic-salt system delivered an 18.56% shorter drilling cycle.

Weigh^® Organic-Salt Weighted Stimulation Technology · Deep high-pressure reservoirs

Solids-free weighted stimulation fluid

For deep, high-pressure, and complex reservoirs, the solids-free weighted system helps balance hydrostatic control, rheology, reservoir protection, and operational safety while reducing solids-related damage risk.

Weigh solids-free annular protection fluid field response figure — Weigh solids-free annular protection fluid supports completion and annular-protection scenarios with emphasis on wellbore integrity and flow-path protection.

Weigh^® Solids-Free Annular Protection Fluid Technology · Completion protection

Field response of solids-free annular protection fluid

Solids-free annular protection fluids support completion and wellbore-protection scenarios, emphasizing clean fluid design, flow-path protection, and wellbore integrity for complex wells.

Field experience in complex oilfield environments