The largest size of sucker rod pump in API11AX is 375. Years ago, we designed 50-475THM sucker rod pump as the requirements of Royal Shell. This sucker rod pump is out of API 11AX and it is designed completely by our own technical engineers and have a great fame in Shell. And Shell orders this sucker rod pump every year from us.
Meanwhile, we supplied a lot of 575 pump barrel to Weatherford.

For the oil wells with sour condition will have a very high requirements for the anti-corrosion performance of the sucker rod pump. The sour condition will cause strong corrosion to the sucker rod pump. Therefore, the sucker rod pump needs to choose anti-corrosion materials. For the wells with sour condition, we have stainless steel sucker rod pump and brass sucker rod pump for option. Both of them have good performance at anti-corrosion.

API pumping units must go through strict factory inspection procedures, and all inspection items must be qualified before they can be delivered to customers. SANJACK designs and manufactures API series pumping units in strict accordance with the provisions of the API 11E standard. According to the Chinese national standard “SY/T5044”, the form experiment, factory inspection, appearance and performance inspection of the pumping unit are carried out. The specific factory inspection items are as follows:

1). Running behavior. Under full load, the pumping unit runs smoothly without impact, vibration or abnormal noise.

2). Horsehead stability. The horsehead does not tremble when the pumping unit is running at full load.

3).Seal ability of finished product. After two hours full load operation of the pumping unit, all the seals have no leakage.

4). Reducer Bearing temperature rising stably. After two hours full load operation of the pumping unit, the bearing temperature rise could not surpass 40 ℃ and the final temperature could not surpass 70℃.

5) Reducer oilsump temperature rising stably. After two hours full load operation of the pumping unit, the oilsump temperature rise could not surpass 40 ℃ and the final temperature could not surpass 70℃.

6). Noise level(dBA). After full load operation, use sound level meter to test, the measuring points distribute two ends of output shaft, calculate average value.

7). Donkey head hanging point projection

After running at full load for 2 hours, the theodolite should measure at least three points in the middle except for the upper and lower starting points.

8). Scissors difference between two cranks. After full load inspection, use mandrel to test, scissors could not surpass the following range.

9). Reliability of brake mechanism. Using the tensioner to guarantee the brake mechanism is steady and reliable, and when crank was in horizontal position, the brake force could not more than 150N. when release brake device, the brake sub and brake belt could not have any contact.

10). Contact area of two cranks and driven shaft. By coating red lead inspection, the upper and bottom contact area of wedge bond could not less than 80%, and every square centimeter should have contact points.

The ECB value means the counterbalance effect of the polished rod, which indicates the lifting capacity of the crank and the counterweight of the pumping unit, which is an important parameter of the beam pumping unit. To a large extent, it determines the overall weight and the price of the pumping unit. The customer shall determine the ECB value of the pumping unit in advance when purchasing the pumping unit. If the customer cannot provide the exact ECB value, then our engineer will choose the most commonly used ECB value for this type of pumping unit as the quotation proposal for the customer. Of course, this value can be changed, along with the weight of the pumping unit and the overall price.

Yes, we have API 6A since 2001, continuously for 20 years already. Our company have more than 50 years’ experience of manufacturing wellhead and X-mas tree. When Shengli Oilfield was established, Shengji company began to manufacture wellhead equipment for the second oilfield

Yes, we also have PR2 for tubing head, casing head, gate valve, and choke valve. Since 2011, we have started PR2 test and obtained PR2 certificates for valve, throttle valve, tubing head and casing head. These certification authorities by DET NORSKE VERITAS.

The content of H2S and CO2 in oil wells, can easily cause corrosion of the tubing. In this case, special material tubing is generally selected.

For oil well with content H2S, we normally select the material S or SS grade, for example, L80S and L80SS. And for oil well with content CO2, we normally select the material added chromium, for example, L80-13Cr, or higher grade.

Yes, we can provide tubing and casing complying with GOST standard. This Standard applies to seamless steel pipes with both triangular and trapezoidal thread and couplings to them, pipes with tight connections and couplings to them, and also to inserted-joint pipes, used for oil and gas wells lining.

GOST Standard Technical Requirements

1). Pipes and couplings shall be produced pursuant to the requirements of this Standard and production schedules approved in accordance with the established procedure.

2). No skins, blisters, laps, delaminations, cracks and dumbs shall be on the outside and internal surfaces of pipes and couplings. Chipping and stripping of these defects is allowed provided that their depth does not exceed maximum negative deviation for wall thickness. Patchwork, calking or embedding of defective places is not allowed. In places where the wall thickness may be measured directly, the depth of defective places may exceed the value specified in this clause, provided that the minimum wall thickness is preserved, determined as a difference between the nominal pipe wall thickness and its maximum negative deviation. Minor dints, nicks, grooves, thin layer of scale and other defects, due to the production process, are allowed, provided that the wall thickness in this case does not go beyond the maximum negative deviations.

3). Junction of the upset part of pipe ТБО female end to its part with the wall
thickness s shall have no abrupt ledges. The defects specified in clause 2.2 are not allowed on a surface with diameter Dн at the length lв min from the pipe end. There shall be no more than three defective places (e.g. underfilled with metal and defects repair), each one extending lengthwise circumference by no more than 50 mm, with the width of no more than 20 mm and depth of no more than 2 mm on external and internal surfaces of the upset part of pipe female end at the distance above lв min from the pipe end. Wall thickness in a junction part of pipe female end shall be no less than minimum allowable wall thickness of the pipe plain part. 4). The mass fraction of sulfur and phosphorus in steel shall not exceed 0.045 % each.

5). Pipes and couplings shall be produced from steel of strength group specified in table 7.

6). Pipes and couplings shall be produced from steel of the same strength group. It is allowed to produce pipe with couplings made from steel with higher mechanical properties. At the customer’s request, the special couplings with decreased outside diameter to pipes ОТТМ and ОТТГ shall be produced from steel of subsequent groups of strength with higher mechanical properties.

7). Pipes and couplings to them of strength group K and higher shall be subjected
to thermal or thermo-mechanical treatment. Pipes ТБО of all groups of strength shall be subjected to thermal treatment after female end upset.

8). Pipes shall pass the test for flattening. The distance between parallel planes after test shall not exceed that specified in table 8.

9). Thread and tightening tapered bores of couplings shall be zinc-coated or
phosphatized.

10). Each pipe with triangular thread (ОТТМ and ОТТГ) shall be equipped with a
coupling fixed on coupling-screwing tool on one of its ends. When screwing pipes and couplings, a lubricant or others sealants, ensuring tightness of connection and preventing it from corrosion and scoring, shall be applied.

11). With the purpose of corrosion prevention, the external surface of each pipe and coupling shall be painted at the customer’s request.

12). Pipes with screwed on couplings, and also inserted-joint pipes shall pass the test under internal hydraulic pressure.

Shengji Petroleum Steam Injection Boiler: With evaporation capacity from 5t/h to 100t/h, and working pressure from 9.8 to 30Mpa, truck mounted and skid mounted. The commonly required evaporation capacity in the market is 9.2t/h, 11.5t/h, 15t/h, 18t/h, 23t/h, 30t/h, etc., and the most popular steam generators are the 25MMBtu/hr and 50MMBtu/hr units in overseas market.

Yes: The water treatment equipment plays a key role in successful operation of steam generation equipment, and the quality of the steam generator feeding water is of critical importance in the steam injection projects. According to the site experience, the poor quality of the feeding water will cause the scale of the boiler and serious damage of the whole steam injection operation. Thus Shengji Petroleum needs to get the end user’s local feeding water quality report to make the whole operating system achieve the optimal effect.