B2B Software Consulting in Houston
Houston’s ledger is a lease ledger: Texas taxes oil production at 4.6% of market value and natural gas at 7.5%, with crude filed monthly by the 25th against lease-level detail and Railroad Commission exemption codes. ERPStack is remote-first, wiring SCADA data into PostgreSQL in AWS Local Zone us-east-1-iah-1a.
Quick Answer
In short: a Houston ERP is an operations ledger with regulators attached: Railroad Commission lease filings, PHMSA's one-hour incident clock under 49 CFR Part 191, PIDX field tickets, and API RP 1173 pipeline safety management. ERPStack builds it remote-first in the AWS us-east-1-iah-1a Local Zone, about 5 ms from Ship Channel sites.
Regional Compliance
- Texas severance tax lease-detail filing
- PHMSA pipeline reporting, 49 CFR Part 191
- API RP 1173 Pipeline Safety Management
- Texas Medical Records Privacy Act (HB 300)
- HIPAA Security Rule for TMC partners
Security & Compliance Architecture
Houston compliance has four owners: the Railroad Commission of Texas, PHMSA, the Comptroller and HIPAA.
Railroad Commission codes are schema, not paperwork
Exempt Types 05 and 14 need a valid project number or the exemption is disallowed, so a Houston lease master stores code and project number as constrained PostgreSQL columns.PHMSA runs a one-hour clock
49 CFR §191.5 allows one hour from confirmed discovery, §191.15 thirty days for Form PHMSA F 7100.2 and §191.17 an annual return by 15 March. API RP 1173 wants the same evidence.HB 300 tightens HIPAA inside Houston
Health & Safety Code §181.102 sets 15 business days for an electronic health record request and §181.101 keeps a training attestation six years — retention a generic build misses.
Engineering Blueprint
Houston is one of two Texas metros with an AWS Local Zone — us-east-1-iah-1a. Ship Channel field gateways post there to a Next.js REST API; the PostgreSQL ledger of record sits behind it in us-east-1.
Allocation before the ledger
Meter readings are not revenue. Houston wellhead and LACT tags land in TimescaleDB, allocation runs as an idempotent job by production month, and Drizzle ORM posts only allocated volumes.
export const allocation = pgTable('allocation', {
leaseId: varchar('rrc_lease_id', { length: 12 }).notNull(),
productionMonth: date('production_month').notNull(),
exemptType: varchar('exempt_type', { length: 2 }),
});PIDX field ticket to invoice
Houston service invoices move as PIDX XML: FieldTicket.xsd maps to the work order, FieldTicketResponse.xsd to approval and Invoice.xsd to the payable, each validated by Zod before the ERP sees it.
Texas Medical Center side
For Houston TMC clients the same multi-tenant platform runs a FHIR facade over Postgres, with RBAC, SSO and encrypted audit logging a HIPAA or SOC 2 review wants.
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Frequently Asked Questions
Through an allocation layer, never a direct write. Houston operators meter at the wellhead and the LACT unit: raw tags stream through Apache Kafka into TimescaleDB, allocation runs as an idempotent job, and only allocated volumes reach the PostgreSQL ledger.
PIDX, once your counterparties are majors. PIDX publishes the oil and gas XML schemas — Invoice.xsd, FieldTicket.xsd and FieldTicketResponse.xsd — that carry a field ticket to an invoice; the upstream bundle is v1.62. Houston suppliers on PDF invoices absorb the cost.
SAP S/4HANA if you are integrated downstream and multinational; Oracle NetSuite if the back office is ordinary. A custom build wins when joint-interest billing is the real complexity: mid-size Houston E&Ps run division-order and JIB logic no module models. Build JIB, buy the rest.
Lease-level detail, not a summary. Texas crude oil tax is 4.6% of market value plus a $0.00625 per-barrel clean-up fee, due monthly on the 25th for the prior production month, with Exempt Types 05 and 14 totalled on Lease Detail Supplement pages — which a Houston operator’s ERP produces per lease, per month.
One hour. 49 CFR §191.5 requires notice no later than one hour after confirmed discovery, with Form PHMSA F 7100.2 inside 30 days and the annual F 7100.2-1 by 15 March. Houston operators encode that clock.
Yes, in two places. Health & Safety Code §181.102 gives a patient their electronic health record within 15 business days, tighter than HIPAA’s 30, and §181.101 requires training within 90 days of hire with an attestation kept six years — both tighter than HIPAA for a Houston vendor.
1 January 2027 for most. CMS-0057-F requires impacted payers to run HL7 FHIR Provider Access, Payer-to-Payer and Prior Authorization APIs by then, with Patient Access API metrics reported from 1 January 2026. Houston plans serving TMC are building now.