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Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park ,Hejian City, Hebei Province,China WhatsApp: +86 15128708428 Also WeChat Tel: +86 (0)317 5586567 Skype: jenny19871026shen Email : sales4@hjderis.com Web: www.welldrillingbit.com http://www.welldrillingbit.com

This is Jenny from Deris which is a manufacturer of tricone bit ,PDC bit, Hole opener, Drag bit etc for well drilling If there is anything we can do for you please feel free to ask us . Thank you for your trust and time We are looking forward to hear from you. Best Regards Jenny (Sale Manager) Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park ,Hejian City, Hebei Province,China WhatsApp: +86 15128708428 Also WeChat Tel: +86 (0)317 5586567 Skype: jenny19871026shen Email : sales4@hjderis.com Web: www.welldrillingbit.com

Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park ,Hejian City, Hebei Province,China WhatsApp: +86 15128708428 Also WeChat Tel: +86 (0)317 5586567 Skype: jenny19871026shen Email : sales4@hjderis.com Web: www.welldrillingbit.com We prodcue and supply 8 1/2" IADC 637 Single cone bit / tricone bit cutters / tricone bit legs for Singapore customers . tricone bit palm used for make hole opener ,core barrel for Pile foundation,Drilling medium to hard formation. High efficiency ,durable ecnomic. Extramly hard tungstan carbide insert teeth , 15MnNi4Mo 15CrNiMo for cone and cutters material enlarge the bit wirkung life. Rubber sealed journal bearing more wear resistant and high temperature.

216mm Tricone bit have been sent by Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park ,Hejian City, Hebei Province,China WhatsApp: +86 15128708428 Also WeChat Tel: +86 (0)317 5586567 Skype: jenny19871026shen Email : sales4@hjderis.com Web: www.welldrillingbit.com 216mm IADC 437 Tricone bit IADC 537 Tricone bit

Hejian Deris Petroleum Drilling Equipment Co., Ltd was established in 2000, located in Hejian City Junziguan Industrial Park, next to National Highway 106, close to Tianjin Port, Beijing Airport, convenient transportation and superior location. The company covers an area of 30 acres and a factory building of 15,000 square meters. Specializing in the production and sales of drilling tools such as TCI Tricone bit, Steel tooth tricone bit, PDC drill bits, HDD Hole opener, roller cone drills bit, Down the hole hammer and DTH hammer bit, oil drill pipes, oil drill collars, etc. A professional design, production, inspection and foreign trade sales team has been established. . Tel: +86 (0)317 5586567 Mobile Phone : +86 15128708428 WhatsApp/ WeChat: +86 15128708428 Email : sales4@hjderis.com Skype: jenny19871026shen QQ : 824942002 Optimal test method for drilling parameters: 1. Drill for 5 minutes with initially selected proper WOB and moderate RPM (60~100r/min) and record the ROP (as shown in the table below). 2. Moderately inctease WOB and keep the same RPM and drill under this WOB for 5 minutes and again record the RPO (as shown in the table below). 3. Decrease WOB b the same extent and tepeat step 2. 4. Find the WOB in the tow groups of test than can yield highest ROP. 5. Properly change RPM under optimal WOB and record the ROP (as shown in the table below). 6. Select the RPM at the highest ROP. 7. Set the drilling parameter at the best combination:60KN RPM: 120r/min Times RPM:100r/min WOB:60KN WOB (KN) Drilling hour (Min/m) RPM (r/min) Drilling hour (Min/m) 1 80 8 100 7 2 100 9 120 5.5 3 60 7 80 8 Select 60 7 120 5.5

Hejian Deris Petroleum Drilling Equipment Co., Ltd R&D and Design IADC 737 and IADC 837 tricone bit for drilling extremely hard rock to meet customers requirement . If you also drilling extremely hard formation please contact with us . Address : Junziguan Industry Park NO.88, Hejian City, Hebei Province, China Tel: +86 (0)317 5586567 Phone /WhatsApp/ WeChat: +86 15128708428 Email : sales4@hjderis.com Skype: jenny19871026shen QQ : 824942002

Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park, Hejian City, Hebei Province, China Tel: +86 (0)317 5586567 Mobile Phone : +86 15128708428 WhatsApp/ WeChat: +86 15128708428 Email : sales4@hjderis.com Skype: jenny19871026shen QQ : 824942002 Well Drilling The most valuable asset you can have for your home or business is a clean, potable, and abundant water supply. Whether it`s for home use or irrigation a water well can be the most important investment you make in your home or business. Becoming informed is the most valuable tool you have before making this investment. What are the basics of a water well? A well is a bored hole in the ground. Steel or plastic well casing will be placed in the bore hole to support unstable earth formations. A seal is placed at the top of the casing to prevent contamination into the well from surface water. The stable formation beneath the casing is often the water bearing zone. In this zone a screen and gravel pack may be installed depending on the formation. After completion the well is then tested for water yield. This is done by either blowing air into the well or bailing the well. Your contractor may also perform some basic water quality tests at this point. Once construction has been completed your contractor will produce a well log which acts as a blue print for both the earth formation they encountered and a build sheet for the well. With this well log a pump contractor can design your new pump system. How much does it cost to drill a well? There is never an exact number until the project is finished. Each well formation can and will be different then another. The best thing to do is when looking over a proposal from a drilling contractor make sure they have specific pricing on the following: Price of drilling per foot Price and size of casing per foot Cost of materials per unit [such as seal, cement, etc. Cost of development and testing Cost of pump system

12 1/4inch reamer with 4pcs IADC637 cones: Horizontal Hole Openers, also known as HDD Reamers, are used to enlarge the pilot hole in. Horizontal Directional Drilling(HDD) - HDD is used when trenching and excavating is not practical.This drilling technology allows for a steerable trenchless way to drill underground. There are three stages: 1>the first stage is to drill a small diameter pilot hole. 2>The second stage is enlarge the hole with a larger diameter cutting tool called an HDD Reamer,Rock Reamer or Hole Opener. 3>The third stage is inserting the casing pipe or other product into the enlarged hole. My company information Hejian Deris Petroleum Drilling Equipment Co., Ltd. Established in 2000 . Have 7 years export experienced . Both Professional Manufacturer and Supplier engaged in 3 " to 26" Tricone bit, 3 " to17 1/2" PDC bit, 300mm to 2000mm hole opener ,core barrel, single cone bit ,roller cone bits ,drag bit and drill pipe etc other drilling tools . Products are widely used in petroleum, natural gas, hydrological address, ore drilling ,water well project , no-dig / Trenchless,Piling project . Introducing the latest technology, advanced production equipment, Perfect testing system to e nsure superior quality .The company has a group of experienced designers and engineers who provide specialized solutions in the field of drilling. Over the years, the high quality products have been exported to more than 30 countries and regions such as the United States, Canada, Germany, Iran, Qatar, Chile and Southeast Asia at reasonable prices. Certificate Hole opener Package and shipping Package Type : wooden case ,also be packaged according to customers requirement Transportation : by sea , by air or land transportation . Less than 50kg shipping by courier better Delivery : If we have stock, the delivery time will need about 2~3 working days. In general, common size tricone bits and pdc bit, we have stock. If we have no stock, such as the tci reamer and pdc hole opener, it will be 7-10 working days in total. How about our Customers feedback ? The drilling deepth more than 460meters 1 pc Metal seal bearing tci tricone bit . TCI Tricone bit Drilling 3500 meters well no problem 1 pc Hole opener drilling more than 10 well no problem Drilling to 1600 meter the PDC drill bit continue work good enough If you are interested in our products please send email to us Our service 1 We are manufacture can supply good quality goods and competitive price 2 We not only have ourselves design but also can accept customization 3 We have fast and on time delivery time 4 Every bits have it's quality assurance 5 Contact our anytime if you have any question with bits. 6 Technical supply online

Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park, Hejian City, Hebei Province, China Tel: +86 (0)317 5586567 Phone : +86 15128708428 WhatsApp/ WeChat: +86 15128708428 + 86 15028618918 Email : sales4@hjderis.com Skype: jenny19871026shen QQ : 824942002 Scan and Add my WeChat : Our company was established in 2000, located in Hejian City Junziguan Industrial Park, next to National Highway 106, 165 kilometers away from Beijing, close to Tianjin Port, Beijing Airport, convenient transportation and superior location. The company covers an area of 30 acres and a factory building of 15,000 square meters. Specializing in the production and sales of drilling tools such as Tricone bit, PDC drill bits, Hole opener, roller cone drills, hammer and hammer bit, drill pipes, drill collars, etc. A professional design, production, inspection and foreign trade sales team has been established. . Each product is manufactured and inspected in strict accordance with the industry's highest technical quality standards and API specifications. The quality assurance system established in accordance with the requirements of ISO 9001 ensures the best quality of the products and the effective operation of the company. The hammer bit we send to Brazil .

Hello Friends A good day ! 10 PCS IADC 127 Steel tooth tricone bit have been dlivey . If you need tricone bit for your project please contact with Jenny and Brean Jenny WhatsApp / WeChat : +86 15128708428 Brean : WhatsApp / WeChat : + 86 15028618918 Email : sales4@hjderis.com (Jenny) sales5@hjderis.com (Brean)

Hello everybody . We start to work after holiday . If you need tricone bit ,PDC bit or hole opener ,hammer bits etc drill tools please contact with us . Mobile / WhatsApp/ WeChat: +86 15128708428 Email : sales4@hjderis.com Skype: jenny19871026shen QQ : 824942002

October 1st to October 7th is the National Day Festival Holiday !

Hello Friends Our tricone bit will be delivery . If you need the tricone bit for your project please feel free to ask us . Hejian Deris Petroleum Drilling Equipment Co., Ltd Address : Junziguan Industry Park NO.88, Hejian City, Hebei Province, China Tel: +86 (0)317 5586567 Fax: +86 (0)317 5586567 Jenny information Phone : +86 15128708428 WhatsApp/ WeChat: +86 15128708428 Email : sales4@hjderis.com Skype: jenny19871026shen