Downhole tool solutions
Innovation & Technology Advantages
1. The "Four‑Ultra” Technology System — The Backbone of Innovation
Sinopec Equipment's core "Four‑Ultra” technology system — ultra‑high pressure structure, ultra‑hard materials, ultra‑high control ability, and ultra‑high precision manufacturing ability — provides the technological backbone for continuous innovation in downhole tools, ensuring consistent breakthrough performance in the world’s most challenging drilling environments.
2. Three‑Stage Cutting Hybrid Bit — China Patent Excellence Award
Kingdream's patented three‑stage cutting toothed‑cone hybrid bit increases crushing stages from conventional two levels to three levels, solving problems of insufficient formation biting, low ROP, cutting tooth wear and short service life. Widely applicable to drilling in complex formations such as interlayers, hard strata and hard‑plastic beds, this technology has been applied in over 4,200 wells across China. In China’s first 10,000‑m ultra‑deep well, Shendi Take 1, a hybrid bit set the national deepest well depth usage record for hybrid bits at 9,253 m.
3. Premium Bearing Systems — Built for Extreme Durability
For tricone bits, bearing life determines bit life. Kingdream tricone bits feature high‑precision composite roller‑journal bearings (rolling elements + arc‑shaped slides) for superior abrasion and seizure resistance. Bearing surfaces are hardfaced with friction‑reducing alloy and silver‑plated, suitable for high rotary speeds. Three sealing options are available: open roller/ball (soft formations), sealed journal with rubber O‑ring (general purpose), and metal face seal (extreme conditions, high‑temperature wells up to 250 ℃).
4. Shaped‑Cutter PDC Technology — Advancing Beyond Planar Cutters
Kingdream's shaped‑cutter PDC bits use non‑planar diamond cutters that significantly enhance durability against both abrasion and impact. Optimizing PDC bit design with shaped cutters addresses drilling challenges including vibration, lateral stability and cutter overheating, allowing bits to drill greater footage in highly abrasive sandstone formations. Since entering a long‑term drill bit service contract with Kuwait Oil Company (KOC) in 2022, large‑size hybrid bits, shaped‑cutter PDC bits and RSS PDC bits have been widely applied, with average ROP improved by more than 20%.
5. KD Force Downhole Motors — Super‑Large Torque Output
The KD Force downhole motor features super‑large torque output and uniform stress distribution, handling complex formations with ease. It effectively reduces the risk of stress concentration and fatigue failure, and is more durable and reliable than standard PDM designs. The motor can operate in high‑temperature (approximately 180 ℃) and high‑oil‑mud conditions, making it suitable for the most demanding drilling applications.
6. Diamond Bits — Proven at 10,000 m Ultra‑Deep Wells
For the world's deepest wells, conventional bits reach their limits. Kingdream’s diamond drill bits rely on circular superhard diamond composite sheets that drill using both "drilling force” and "grinding force” — proven in China's first 10,000‑m ultra‑deep well, Shendi Take 1. The four‑blade KSF fast drilling pioneer diamond bit, paired with a high‑torque downhole motor, has shattered over 30 performance records in the Tarim Basin.
7. API Spec 7‑2 and ISO 9001 Certified Across All Products
All Kingdream downhole tools are designed, manufactured and tested to API Spec 7‑2 (Rotary Shouldered Connections), covering dimensional requirements on threads and thread gauges, gauging practice and gauge specifications. We also comply with API Spec 7‑1 for rotary drill stem elements. Third‑party inspection through DNV, ABS, Lloyd's or any accredited agency is available. Kingdream successfully passed the 2025 API certification audit, including API Q1/ISO 9001 quality management system surveillance, roller cone bit monogram surveillance and diamond bit monogram recertification.
8. Integrated R&D and Field Service — Joint Testing, Not Just Sales
Kingdream’s R&D and marketing for different types of products are not divided or separated. The company continues to promote integrated design and supply of drill bits and drilling tools such as downhole motors and provide value‑added services. Sales personnel and technical service personnel work together on drilling sites, conducting joint tests and product selection with the customers. Kingdream has established a service chain for all drilling processes and has carried out effective services.
Technical Specifications — Complete Reference Tables
IADC Code Selection Guide — Tricone Bits
The IADC code is the global classification for roller cone bits.
| IADC Code Range | Cutting Structure | Formation Type | Recommended RPM | WOB (kN/mm) |
|---|---|---|---|---|
| 111–117 | Steel tooth | Very soft | 200–80 | 0.3–0.75 |
| 211–247 | Steel tooth | Soft to medium | 180–70 | 0.5–1.0 |
| 311–347 | Steel tooth | Medium to hard | 160–60 | 0.75–1.1 |
| 417–447 | TCI | Very soft to soft | 160–60 | 0.75–1.1 |
| 517–547 | TCI | Soft to medium | 120–40 | 1.0–1.5 |
| 617–647 | TCI | Medium to hard | 90–35 | 1.3–1.8 |
| 737–777 | TCI | Hard to extremely hard | 70–25 | 1.5–2.0 |
IADC Code Interpretation:
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First digit (1–8): Cutting structure and formation series (1–3 steel tooth; 4–8 TCI)
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Second digit (1–8): Formation hardness within series (1 = very soft … 8 = extremely hard)
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Third digit (1–7): Bearing/seal/gage protection design
Tricone Bits — Steel Tooth (IADC 111–347) Specifications
| Parameter | Specification |
|---|---|
| Bit diameter range | 3 3/4″ to 26″ |
| Material | High‑manganese steel with tungsten carbide hardfacing |
| Hardfacing application | On all surfaces of cutting structure and shirttail tip |
| Bearing options | Open roller/ball (IADC ends in 1–2) or sealed roller (IADC ends in 3–4) |
| Common IADC codes | 111, 115, 116, 117, 121, 126, 127, 131, 136, 137, 216, 217, 316, 317, 326, 327, 336, 337, etc. |
Tricone Bits — TCI (IADC 417–777) Specifications
| Parameter | Specification |
|---|---|
| Bit diameter range | 3 3/4″ to 26″ |
| Insert material | Premium tungsten carbide (spherical, conical, chisel shapes) |
| Bearing options | Sealed journal bearing (rubber O‑ring for IADC ends in 4–5, metal face seal for ends in 6–7) |
| Common IADC codes | 417, 437, 515, 517, 535, 537, 617, 637, etc. |
PDC Drill Bit Specifications
| Parameter | Specification |
|---|---|
| Bit diameter range | 3 3/4″ – 17 1/2″ (95 mm – 445 mm) |
| Body type | Steel body or tungsten carbide matrix body |
| Cutter diameter | 13 mm, 16 mm, 19 mm or 25 mm premium synthetic diamond compacts |
| Cutter shape | Planar and non‑planar (shaped‑cutter) options |
| Blade count | 5 to 9 blades |
| Recommended ROP | 8–60 m/h depending on formation |
| Hydraulic design | CFD‑optimised nozzle placement |
Diamond Drill Bit Specifications
| Parameter | Specification |
|---|---|
| Bit diameter range | 3 3/4″ to 26″ |
| Types available | Impregnated diamond, surface‑set natural diamond, diamond‑enhanced PDC, four‑blade KSF fast drilling diamond |
| Cutting mechanism | Combined "drilling force” and "grinding force” through circular superhard diamond composite sheets |
| Application | Ultra‑deep wells (>7,000 m), extremely hard/abrasive formations |
| Temperature rating | Up to 250 ℃ with proper configuration |
KD Force Downhole Motor Specifications
| Parameter | Specification |
|---|---|
| Diameter range | 3 1/2″ – 9 1/2″ |
| Torque output | Super‑large torque output |
| Stress distribution | Uniform across motor length |
| Rotor material | High‑quality alloy steel |
| Stator material | High‑strength rubber with high force and tearing strength |
| Operating temperature | Up to approx. 180 ℃ |
| Application | High‑oil‑mud conditions, complex formations |
| Key advantage | Reduces stress concentration and fatigue failure risk |
Drill Collar Specifications
| Parameter | Slick Collar | Spiral Collar | Non‑Magnetic Collar |
|---|---|---|---|
| Diameter range | 3 1/8″ – 10″ | 3 1/8″ – 10″ | 3 1/8″ – 10″ |
| Material | AISI 4145H modified alloy steel | AISI 4145H modified alloy steel | Non‑magnetic alloy steel |
| Heat treatment | Full‑length, Brinell 285–341 | Full‑length, Brinell 285–341 | Specialized non‑magnetic processing |
| Impact strength | Min. 40 ft‑lbs IZOD | Min. 40 ft‑lbs IZOD | Application‑dependent |
| Key advantage | BHA stiffness and weight | Reduces differential sticking | MWD survey compatibility |
Rotary Sub Specifications
| Parameter | Lift Sub | Crossover Sub | Kelly Saver Sub |
|---|---|---|---|
| Thread sizes | 2 7/8″ – 7 5/8″ REG | Custom | 4 1/2″ – 6 5/8″ REG |
| Material | AISI 4145H | AISI 4145H | High‑strength alloy steel |
| Standard length | 36″ or 48″ | Custom | 36″ or 48″ |
| Key advantage | BHA handling | Connecting mismatched thread types | Extending kelly life |
API Connection Threads — By Tool Diameter
All Kingdream downhole tools use API Spec 7‑2 rotary shouldered connections (API REG, IF, FH styles), the industry standard for drill‑string components.
| Tool Diameter Range | Pin Connection (API REG) |
|---|---|
| Small tools (≤4 3/4″) | 2 7/8″ REG |
| Medium tools (5 1/2″ – 6 1/2″) | 3 1/2″ REG |
| Standard tools (7 7/8″ – 8 1/2″) | 4 1/2″ REG |
| Large tools (9 7/8″ – 13 3/4″) | 6 5/8″ REG |
| Extra‑large tools (14 3/4″ – 26″) | 7 5/8″ REG |
Applications — Where Kingdream Downhole Tool Solutions Excel
| Application | Formation Characteristics | Recommended Tool Configuration | Key Advantage |
|---|---|---|---|
| Conventional onshore vertical wells | Soft to medium shale, sandstone, limestone | Steel tooth tricone or PDC + standard BHA | Cost‑effective, high ROP |
| Deep wells (5,000–7,000 m) | Hard, compacted, abrasive | TCI tricone + KD Force motor | Extended bit life, gage retention |
| Ultra‑deep wells (>7,000 m) | Extremely hard, high confining stress | Diamond bit + KD Force motor + non‑magnetic collars | 5,818 m "one trip drilling” record |
| Horizontal / directional wells | Variable hardness, interbedded | Shaped‑cutter/RSS PDC bit + KD Force motor + stabilizers | Consistent build‑up, reduced steering |
| Complex interlayered formations | Alternating soft/hard beds, hard plastic | Three‑stage hybrid bit + torque impactor | Superior formation biting (patented) |
| Middle East carbonate reservoirs | Hard, fractured carbonates | Large‑size hybrid bits, shaped‑cutter PDC, RSS PDC | 20%+ ROP improvement — proven in Kuwait |
| Algeria complex strata | High geological complexity, technical bottlenecks | Sinopec full‑size drill bits + downhole motors | Breaking through complex strata constraints |
| Unconventional shale gas wells | Shale with chert lenses, interbedded | High blade count PDC + KD Force motor | Vibration mitigation, consistent ROP |
| Offshore platform drilling | Variable, often with interbedded hard streaks | Matrix body PDC + corrosion‑protected BHA | Long runs, reduced trips |
Field Performance — Tarim Basin (5,818 m "One Trip Drilling”)
In late May 2024, using a combination of a customized 9 1/2‑inch four‑blade KSF fast drilling pioneer diamond drill bit and a 197 mm high‑torque equal‑stress downhole motor, the crew finished drilling the second section of the Repu 901H well in the northern Tarim block in an integrated manner. The "one trip drilling” footage reached 5,818 m, setting a national record for the longest "one trip drilling” footage in China. Since the introduction of this integrated solution in the Tarim Basin, Kingdream has successfully shattered over 30 performance records.
Field Performance — Kuwait Oil Company (20%+ ROP Improvement)
Kingdream entered a long‑term drill bit service contract with Kuwait Oil Company (KOC) in 2022. After two years, large‑size hybrid bits, shaped‑cutter PDC bits and RSS PDC bits have been widely applied across Kuwait's oilfields. Through continuous product iteration in each oilfield block, the average rate of penetration has been improved by more than 20%. Kingdream’s technical promotion conference in Kuwait in 2024 strengthened cooperation and shared cutting‑edge drilling technologies.
Field Performance — Algeria (57% ROP Improvement with Hybrid Bits)
Kingdream's hybrid bit was successfully applied in Algeria’s Sonatrach Southwest block, achieving 2.67 m/h mechanical ROP — a 57% increase over offset wells. Full‑size drill bits from Sinopec Equipment have effectively broken through the technical bottlenecks of complex strata and contributed to oil and gas development in Algeria.
Why Choose Kingdream for Your Downhole Tool Solutions
1. National Manufacturing Champion — Industry‑Highest Recognition
Kingdream has been honored as a National Manufacturing Single Item Champion Demonstration Enterprise for its roller cone bits — the highest recognition for Chinese manufacturing in the drill bit sector. The KINGDREAM trademark is recognized as a well‑known trademark in China.
2. Complete Downhole Tool Strings — One Supplier, One Warranty
Kingdream produces complete sets of downhole tool strings: diamond bits, hybrid bits, KD Force ultra‑high‑torque downhole motors, torque impactors, drill collars, stabilizers and rotary subs — all under one roof. One supplier eliminates finger‑pointing, simplifies procurement, and ensures every component is engineered to work together.
3. Field‑Proven Record — 5,818 m "One Trip Drilling” National Record
The 5,818 m "one trip drilling” footage in the Tarim Basin — using a Kingdream diamond bit paired with a KD Force downhole motor — is a verified national record that validates the effectiveness of Kingdream's integrated approach. Since the introduction of this integrated solution, Kingdream has shattered over 30 performance records in the basin.
4. 20%+ ROP Improvement Proven in Kuwait
Since entering a long‑term contract with Kuwait Oil Company in 2022, Kingdream’s large‑size hybrid bits, shaped‑cutter PDC bits and RSS PDC bits have improved average ROP by more than 20% through continuous product iteration.
5. 57% ROP Improvement Proven in Algeria
In Algeria's Sonatrach Southwest block, Kingdream’s hybrid bit achieved 2.67 m/h mechanical ROP — a 57% increase over offset wells.
6. API Spec 7‑2 and ISO 9001 Certified Across All Products
All Kingdream downhole tools comply with API Spec 7‑2 (rotary shouldered connections) and ISO 9001, with full third‑party inspection available through any accredited agency. Kingdream successfully passed the 2025 API certification audit.
7. "Four‑Ultra” Technology System — The Backbone of Innovation
The core "Four‑Ultra” technology system — ultra‑high pressure structure, ultra‑hard materials, ultra‑high control ability, and ultra‑high precision manufacturing — provides the technological foundation for continuous innovation in downhole tools.
8. Integrated R&D and Field Service — Joint Testing, Not Just Sales
Sales personnel and technical service personnel work together on drilling sites, conducting joint tests and product selection with customers. Kingdream has established a service chain for all drilling processes.
9. Vertically Integrated Manufacturing — 17 Production Lines
SOFE has 17 production lines, an 8,000 hp pump test center and seven professional laboratories — ensuring consistent quality and complete traceability for every certified component.
10. Global Reach — 40+ Countries, All Major Continents
Kingdream has exported downhole tools to more than 40 countries and regions across North America, South America, Russia, the Middle East and Africa.
Frequently Asked Questions (FAQ)
Q1: What types of downhole tools does Kingdream manufacture?
Kingdream manufactures a complete range of downhole tools: tricone bits (steel tooth and TCI), PDC bits (steel body and matrix body), diamond bits, hybrid bits, KD Force downhole motors, torque impactors, drill collars (slick, spiral, non‑magnetic), stabilizers (integral blade, sleeve), rotary subs (lift, crossover, kelly saver), and complete BHA packages. We can produce complete sets of downhole tool strings.
Q2: What size range do Kingdream drill bits cover?
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Tricone bits: 3 3/4″ to 26″
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PDC bits: 3 3/4″ to 17 1/2″
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Diamond bits: 3 3/4″ to 26″
The diamond bit size covers 3 3/4 to 26 inches to meet the needs of drilling projects.
Q3: What API specifications do Kingdream downhole tools comply with?
All Kingdream downhole tools comply with API Spec 7‑2 (Rotary Shouldered Connections) and API Spec 7‑1 (Rotary Drill Stem Elements). Kingdream successfully passed the 2025 API certification audit, including API Q1/ISO 9001 quality management system surveillance, roller cone bit monogram surveillance and diamond bit monogram recertification.
Q4: What is the advantage of an integrated downhole tool string over sourcing separately?
When bits, downhole motors and accessories are sourced from different suppliers, compatibility issues, interface mismatches and finger‑pointing can arise. Kingdream's integrated model means one engineering team designs all components together, one quality system tests the complete string, and one service team supports the entire BHA. This approach achieved the 5,818 m "one trip drilling” record and is available for your wells.
Q5: What is the KD Force downhole motor, and why is it special?
The KD Force downhole motor features super‑large torque output and uniform stress distribution, handling complex formations with ease while effectively reducing the risk of stress concentration and fatigue failure, and is more durable and reliable. It can operate in high‑temperature (approximately 180 ℃) and high‑oil‑mud conditions.
Q6: What is the Kingdream three‑stage cutting hybrid bit?
Kingdream's patented three‑stage cutting toothed‑cone hybrid bit increases crushing stages from conventional two levels to three levels, solving problems of insufficient formation biting, low ROP, cutting tooth wear and short service life. This technology won the China Patent Excellence Award and has been used in over 4,200 wells across China. In Algeria’s Sonatrach Southwest block, the hybrid bit achieved 2.67 m/h mechanical ROP — a 57% increase over offset wells.
Q7: What is the typical lead time for Kingdream downhole tools?
For standard tools — common sizes and IADC codes — typical lead time is 4–6 weeks from order confirmation to shipment. Custom tool strings and integrated BHA packages require 6–8 weeks depending on specifications.
Q8: Does Kingdream provide training for downhole tool selection?
Yes. Kingdream has established a service chain for all drilling processes. Sales personnel and technical service personnel work together on drilling sites, conducting joint tests and product selection with customers. We provide training on bit selection, motor sizing, BHA design and on‑site technical support.
